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758 lines
370 KiB
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758 lines
370 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<class-scheme publication-date="2023-02-01" scheme-type="cpc" publication-type="official">
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<classification-item breakdown-code="false" not-allocatable="true" level="5" additional-only="false" sort-key="H04Q" definition-exists="true" date-revised="2021-08-01" status="published"><classification-symbol>H04Q</classification-symbol><class-title date-revised="2021-08-01"><title-part><text>SELECTING </text><reference><text>switches, relays, selectors <class-ref scheme="cpc">H01H</class-ref>; wireless communication networks <class-ref scheme="cpc">H04W</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>This subclass <u>covers</u>: <subnote type="bullet"><note-paragraph>methods, circuits, or apparatus for stablishing selectively a connect ion between a desired number of stations (normally two), or between a main station and a desired number of substations (normally one) for the purpose of transferring information via this connection after it has been established; </note-paragraph><note-paragraph>selective calling arrangements over connections already established.</note-paragraph></subnote> In either case, the connection may be made by means of electric conductors or electromagnetic waves.</note-paragraph><note-paragraph>In this subclass, the following terms or expressions are used with the meanings indicated: <subnote type="bullet"><note-paragraph>"subscriber" is a general term for terminal equipment, e.g. telephone for public use;</note-paragraph><note-paragraph>"substation" means a subscriber or monitoring equipment which may connect a single subscriber to a line without choice as to subscriber; </note-paragraph><note-paragraph>"satellite" is a kind of exchange the operation of which depends upon control signals received from a supervisory exchange;</note-paragraph><note-paragraph>"switching centres" includes exchanges and satellites.</note-paragraph></subnote></note-paragraph></note><note type="warning"><note-paragraph>In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.</note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="H04Q1/00" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/00</classification-symbol>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="H04Q1/00" definition-exists="true" ipc-concordant="H04Q1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>H04Q1/00</classification-symbol><class-title date-revised="2021-08-01"><title-part><text>Details of selecting apparatus or arrangements</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q1/02" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Constructional details</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/021" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/021</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using pivoting mechanisms for accessing the interior of the apparatus</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/023" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using sliding mechanisms for accessing the interior of the apparatus</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/025" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cabinets</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/026" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterized by door details</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/028" definition-exists="true" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>H04Q1/028</classification-symbol><class-title date-revised="2021-08-01"><title-part><CPC-specific-text><text>Subscriber network interface devices</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/03" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/03</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Power distribution arrangements</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/032" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/032</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>power failure protection</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/035" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/035</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cooling of active equipments, e.g. air ducts</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/04" definition-exists="false" ipc-concordant="H04Q1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Frames or mounting racks for selector switches</text></title-part><title-part><text>Accessories therefor, e.g. frame cover</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/06" definition-exists="true" ipc-concordant="H04Q1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>H04Q1/06</classification-symbol><class-title date-revised="2021-08-01"><title-part><text>Cable ducts or mountings specially adapted for exchange installations</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/062" definition-exists="false" ipc-concordant="H04Q1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>vertical management arrangements</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/064" definition-exists="false" ipc-concordant="H04Q1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/064</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>horizontal management arrangements</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/066" definition-exists="false" ipc-concordant="H04Q1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>arranged on the front side</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/068" definition-exists="false" ipc-concordant="H04Q1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>arranged on the rear side</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/08" definition-exists="false" ipc-concordant="H04Q1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Frames or mounting racks for relays</text></title-part><title-part><text>Accessories therefor</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/09" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/09</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Frames or mounting racks not otherwise provided for</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/10" definition-exists="false" ipc-concordant="H04Q1/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Exchange station construction</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/11" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/11</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Protection against environment</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/112" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/112</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>mechanical protection, e.g. resistance to earthquakes</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/114" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/114</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>flooding protection, e.g. using water proof provision</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/116" definition-exists="true" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>H04Q1/116</classification-symbol><class-title date-revised="2021-08-01"><title-part><CPC-specific-text><text>lightning or EMI protection, e.g. shielding or grounding</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/118" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/118</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>heat or sun protection</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/12" definition-exists="false" ipc-concordant="H04Q1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements of multiple bars with or without pivotable frames</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/13" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/13</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Patch panels for monitoring, interconnecting or testing circuits, e.g. patch bay, patch field or jack field; Patching modules</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/131" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/131</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>being pivotable</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/133" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/133</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>being slidable</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/135" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/135</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterized by patch cord details</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q1/136" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/136</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having patch field management or physical layer management arrangements</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q1/138" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/138</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using RFID</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/14" definition-exists="false" ipc-concordant="H04Q1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Distribution frames</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/141" definition-exists="false" ipc-concordant="H04Q1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/141</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of connexions between cable and distribution frame</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/142" definition-exists="false" ipc-concordant="H04Q1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/142</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Terminal blocks for distribution frames</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/143" definition-exists="false" ipc-concordant="H04Q1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/143</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with contacts on circular surface</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/144" definition-exists="false" ipc-concordant="H04Q1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/144</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Plugs used in distribution frames</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/145" definition-exists="false" ipc-concordant="H04Q1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with switches arranged in a matrix configuration</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/146" definition-exists="false" ipc-concordant="H04Q1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/146</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with line protection means</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/147" definition-exists="false" ipc-concordant="H04Q1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/147</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using robots for distributing</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/148" definition-exists="false" ipc-concordant="H04Q1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/148</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Identification strips for distribution frames</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/149" definition-exists="false" ipc-concordant="H04Q1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/149</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Wireguides in connector blocks</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/15" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/15</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Backplane arrangements</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/155" definition-exists="false" ipc-concordant="H04Q1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/155</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by connection features</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/16" definition-exists="false" ipc-concordant="H04Q1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Wiring arrangements for selector switches or relays in frames</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q1/18" definition-exists="false" ipc-concordant="H04Q1/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electrical details</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/20" definition-exists="false" ipc-concordant="H04Q1/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Testing circuits or apparatus</text></title-part><title-part><text>Circuits or apparatus for detecting, indicating, or signalling faults or troubles</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/22" definition-exists="false" ipc-concordant="H04Q1/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Automatic arrangements</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q1/24" definition-exists="false" ipc-concordant="H04Q1/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for connection devices</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q1/245" definition-exists="false" ipc-concordant="H04Q1/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/245</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in time-division multiplex systems</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q1/26" definition-exists="false" ipc-concordant="H04Q1/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for signalling trouble in unoccupied sub-exchanges</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/28" definition-exists="true" ipc-concordant="H04Q1/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Current-supply circuits or arrangements for selection equipment at exchanges</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/30" definition-exists="true" ipc-concordant="H04Q1/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>H04Q1/30</classification-symbol><class-title date-revised="2021-08-01"><title-part><text>Signalling arrangements</text></title-part><title-part><text>Manipulation of signalling currents </text><reference><text>multiplex systems providing for calling or supervisory signals <class-ref scheme="cpc">H04J1/14</class-ref>, <class-ref scheme="cpc">H04J3/12</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/32" definition-exists="false" ipc-concordant="H04Q1/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using trains of dc pulses </text><reference><text><class-ref scheme="cpc">H04Q1/39</class-ref> takes precedence</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q1/34" definition-exists="false" ipc-concordant="H04Q1/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Impulse regenerators with mechanical or other non-electrical marking arrangements</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q1/36" definition-exists="false" ipc-concordant="H04Q1/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pulse-correcting arrangements, e.g. for reducing effects due to interference</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/38" definition-exists="false" ipc-concordant="H04Q1/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/39" definition-exists="false" ipc-concordant="H04Q1/39" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/39</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using coded pulse groups</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/40" definition-exists="false" ipc-concordant="H04Q1/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>whereby duration of pulse or interval between two pulses is variable</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q1/42" definition-exists="false" ipc-concordant="H04Q1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>involving the position of a pulse in a cycle</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/44" definition-exists="false" ipc-concordant="H04Q1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using alternate current </text><reference><text><class-ref scheme="cpc">H04Q1/50</class-ref> takes precedence</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q1/442" definition-exists="false" ipc-concordant="H04Q1/442" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/442</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with out-of-voice band signalling frequencies</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q1/4423" definition-exists="false" ipc-concordant="H04Q1/442" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/4423</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using one signalling frequency</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q1/4426" definition-exists="false" ipc-concordant="H04Q1/442" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/4426</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using two or more signalling frequencies, transmitted in succession or simultaneously</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q1/444" definition-exists="false" ipc-concordant="H04Q1/444" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/444</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with voice-band signalling frequencies</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q1/446" definition-exists="false" ipc-concordant="H04Q1/446" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/446</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using one signalling frequency </text><reference><text><class-ref scheme="cpc">H04Q1/46</class-ref> takes precedence</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="H04Q1/4465" definition-exists="false" ipc-concordant="H04Q1/446" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/4465</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the same frequency being used for all signalling information, e.g. A.C. nr.9 system</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="H04Q1/448" definition-exists="false" ipc-concordant="H04Q1/448" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/448</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with conversion of a single frequency signal into a digital signal</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="H04Q1/4485" definition-exists="false" ipc-concordant="H04Q1/448" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/4485</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>which is transmitted in digital form</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q1/45" definition-exists="false" ipc-concordant="H04Q1/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/45</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using multi-frequency signalling </text><reference><text><class-ref scheme="cpc">H04Q1/46</class-ref> takes precedence</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="H04Q1/453" definition-exists="false" ipc-concordant="H04Q1/453" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/453</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in which m-out-of-n signalling frequencies are transmitted</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="H04Q1/4535" definition-exists="false" ipc-concordant="H04Q1/453" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/4535</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with an additional signal transmitted for voice protection</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="H04Q1/457" definition-exists="false" ipc-concordant="H04Q1/457" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/457</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with conversion of multifrequency signals into digital signals</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="H04Q1/4575" definition-exists="false" ipc-concordant="H04Q1/457" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/4575</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>which are transmitted in digital form</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q1/46" definition-exists="false" ipc-concordant="H04Q1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/48" definition-exists="false" ipc-concordant="H04Q1/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/48</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Induced-current signalling arrangements</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q1/50" definition-exists="false" ipc-concordant="H04Q1/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Conversion between different kinds of signals</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/54" definition-exists="true" ipc-concordant="H04Q1/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Amplifier switched-on automatically in dependence on automatically-selected lines</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q1/56" definition-exists="true" ipc-concordant="H04Q1/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q1/56</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Balancing circuitry switched-on automatically in dependence on automatically-selected lines</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="H04Q3/00" definition-exists="true" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>H04Q3/00</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Selecting arrangements </text><reference><text><class-ref scheme="cpc">H04Q5/00</class-ref> - <class-ref scheme="cpc">H04Q11/00</class-ref> take precedence</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/0004" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using crossbar selectors in the switching stages</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/0008" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using relay selectors in the switching stages</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/0012" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0012</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in which the relays are arranged in a matrix configuration</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/0016" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0016</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements providing connection between exchanges</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/002" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/0025" definition-exists="true" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>H04Q3/0025</classification-symbol><class-title date-revised="2021-08-01"><title-part><CPC-specific-text><text>Provisions for signalling</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/0029" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0029</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Provisions for intelligent networking</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/0033" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0033</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>customer-controlled</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/0037" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0037</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>involving call modelling techniques, e.g. modifications to the basic call state model [BCSM]</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/0041" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0041</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>involving techniques for avoiding interaction of call service features</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/0045" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>involving hybrid, i.e. a mixture of public and private, or multi-vendor systems</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/005" definition-exists="true" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>H04Q3/005</classification-symbol><class-title date-revised="2021-08-01"><title-part><CPC-specific-text><text>Personal communication services, e.g. provisions for portability of subscriber numbers</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/0054" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0054</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Service creation techniques</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q3/0058" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0058</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using service-independent building blocks (SIBBs) or "primitives"</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/0062" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Provisions for network management</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/0066" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Bandwidth allocation or management</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/007" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>customer-controlled</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/0075" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0075</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fault management techniques</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q3/0079" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0079</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>involving restoration of networks, e.g. disaster recovery, self-healing networks</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/0083" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0083</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Network planning or design; Modelling of planned or existing networks</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/0087" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0087</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Network testing or monitoring arrangements</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/0091" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0091</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Congestion or overload control</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/0095" definition-exists="false" ipc-concordant="H04Q3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/0095</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Specification, development or application of network management software, e.g. software re-use</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/02" definition-exists="false" ipc-concordant="H04Q3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Circuit arrangements for selectors responsive to a permutation code</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/04" definition-exists="false" ipc-concordant="H04Q3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Circuit arrangements for receivers of routing digits</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/06" definition-exists="false" ipc-concordant="H04Q3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for group or trunk group selectors</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/08" definition-exists="false" ipc-concordant="H04Q3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for local or long-distance selectors</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/10" definition-exists="false" ipc-concordant="H04Q3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for PBX selectors, i.e. private branch exchange selectors</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/12" definition-exists="false" ipc-concordant="H04Q3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for line selectors providing transfer of routing digits</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/14" definition-exists="false" ipc-concordant="H04Q3/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for two-way operation selectors</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/16" definition-exists="false" ipc-concordant="H04Q3/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for marking-switches</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/18" definition-exists="false" ipc-concordant="H04Q3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Circuit arrangements for first stage of hunting switching</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/20" definition-exists="false" ipc-concordant="H04Q3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for preselectors</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/22" definition-exists="false" ipc-concordant="H04Q3/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>comprising common calling and disconnecting circuit</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/24" definition-exists="false" ipc-concordant="H04Q3/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for line finders</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/26" definition-exists="false" ipc-concordant="H04Q3/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>comprising common calling and disconnecting circuit</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/28" definition-exists="false" ipc-concordant="H04Q3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>comprising main groups and subgroups</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/30" definition-exists="false" ipc-concordant="H04Q3/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Selector finders, i.e. allotters</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/32" definition-exists="false" ipc-concordant="H04Q3/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Circuit arrangements for second or subsequent stages of hunting switching</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/34" definition-exists="false" ipc-concordant="H04Q3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for the second preselection stage</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/36" definition-exists="false" ipc-concordant="H04Q3/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for the second line-finder stage</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/38" definition-exists="false" ipc-concordant="H04Q3/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for stages after the group selector stage</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/40" definition-exists="false" ipc-concordant="H04Q3/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for stages after the line selector, e.g. for extension selector</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/42" definition-exists="false" ipc-concordant="H04Q3/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/44" definition-exists="false" ipc-concordant="H04Q3/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using revertive control</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/46" definition-exists="false" ipc-concordant="H04Q3/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using signals other than revertive impulses</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/47" definition-exists="false" ipc-concordant="H04Q3/47" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/47</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using translators</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/48" definition-exists="false" ipc-concordant="H04Q3/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/48</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using markers</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/49" definition-exists="false" ipc-concordant="H04Q3/49" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/49</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for end-to-end marking</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/495" definition-exists="false" ipc-concordant="H04Q3/495" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/495</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for routing connecting paths</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/52" definition-exists="false" ipc-concordant="H04Q3/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using static devices in switching stages, e.g. electronic switching arrangements</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/521" definition-exists="false" ipc-concordant="H04Q3/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/521</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using semiconductors in the switching stages</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q3/523" definition-exists="false" ipc-concordant="H04Q3/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/523</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/525" definition-exists="false" ipc-concordant="H04Q3/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/525</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using tubes in the switching stages</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/526" definition-exists="true" ipc-concordant="H04Q3/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/526</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Optical switching systems</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q3/528" definition-exists="false" ipc-concordant="H04Q3/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/528</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/54" definition-exists="false" ipc-concordant="H04Q3/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in which the logic circuitry controlling the exchange is centralised</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/542" definition-exists="true" ipc-concordant="H04Q3/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>H04Q3/542</classification-symbol><class-title date-revised="2021-08-01"><title-part><CPC-specific-text><text>Logic circuits or arrangements therefor</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/545" definition-exists="false" ipc-concordant="H04Q3/545" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-11-01" status="published"><classification-symbol>H04Q3/545</classification-symbol><class-title date-revised="2015-11-01"><title-part><text>using a stored programme</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q3/54508" definition-exists="false" ipc-concordant="H04Q3/545" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>H04Q3/54508</classification-symbol><class-title date-revised="2021-08-01"><title-part><CPC-specific-text><text>Configuration, initialisation</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q3/54516" definition-exists="false" ipc-concordant="H04Q3/545" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/54516</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Initialization, software or data downloading </text><reference><text><class-ref scheme="cpc">G06F9/445</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q3/54525" definition-exists="false" ipc-concordant="H04Q3/545" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/54525</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Features introduction</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q3/54533" definition-exists="false" ipc-concordant="H04Q3/545" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/54533</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Configuration data, translation, passwords, databases</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q3/54541" definition-exists="false" ipc-concordant="H04Q3/545" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/54541</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using multi-processor systems</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q3/5455" definition-exists="false" ipc-concordant="H04Q3/545" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/5455</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Multi-processor, parallelism, distributed systems</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q3/54558" definition-exists="false" ipc-concordant="H04Q3/545" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/54558</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Redundancy, stand-by</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q3/54566" definition-exists="false" ipc-concordant="H04Q3/545" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/54566</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Intelligent peripherals, adjunct processors</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q3/54575" definition-exists="false" ipc-concordant="H04Q3/545" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/54575</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Software application</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q3/54583" definition-exists="false" ipc-concordant="H04Q3/545" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/54583</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Software development, e.g. procedural, object oriented, software generation, software testing</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="H04Q3/54591" definition-exists="false" ipc-concordant="H04Q3/545" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/54591</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Supervision, e.g. fault localisation, traffic measurements, avoiding errors, failure recovery, monitoring, statistical analysis</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/55" definition-exists="false" ipc-concordant="H04Q3/55" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/55</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using wired logic circuitry</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q3/552" definition-exists="false" ipc-concordant="H04Q3/55" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/552</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Wired circuits or arrangements therefor</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q3/555" definition-exists="false" ipc-concordant="H04Q3/555" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/555</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>being comprised by electro-magnetic devices</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/56" definition-exists="false" ipc-concordant="H04Q3/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/56</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in which the control signals are multiplexed</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/58" definition-exists="false" ipc-concordant="H04Q3/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/58</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements providing connection between main exchange and sub-exchange or satellite</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/60" definition-exists="false" ipc-concordant="H04Q3/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for connecting to satellites or concentrators which connect one or more exchange lines with a group of local lines</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/602" definition-exists="false" ipc-concordant="H04Q3/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/602</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Circuit arrangements therefor</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/605" definition-exists="false" ipc-concordant="H04Q3/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/605</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements in the satellite or concentrator</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q3/607" definition-exists="false" ipc-concordant="H04Q3/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/607</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/62" definition-exists="false" ipc-concordant="H04Q3/62" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/62</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for connecting to private branch exchanges</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/622" definition-exists="false" ipc-concordant="H04Q3/62" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/622</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Circuit arrangements therefor</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/625" definition-exists="false" ipc-concordant="H04Q3/62" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/625</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements in the private branch exchange</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q3/627" definition-exists="false" ipc-concordant="H04Q3/62" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/627</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/64" definition-exists="false" ipc-concordant="H04Q3/64" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/64</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Distributing or queueing</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/645" definition-exists="false" ipc-concordant="H04Q3/64" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/645</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Circuit arrangements therefor</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/66" definition-exists="false" ipc-concordant="H04Q3/66" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/66</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Traffic distributors</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/665" definition-exists="false" ipc-concordant="H04Q3/66" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/665</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Circuit arrangements therefor</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/68" definition-exists="false" ipc-concordant="H04Q3/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/68</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Grouping or interlacing selector groups or stages</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q3/685" definition-exists="false" ipc-concordant="H04Q3/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/685</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Circuit arrangements therefor</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/70" definition-exists="false" ipc-concordant="H04Q3/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/70</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Identification of class of calling subscriber</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/72" definition-exists="false" ipc-concordant="H04Q3/72" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/72</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Finding out and indicating number of calling subscriber</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q3/74" definition-exists="false" ipc-concordant="H04Q3/74" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/74</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Identification of subscriber calling from a party-line</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/76" definition-exists="false" ipc-concordant="H04Q3/76" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/76</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Translation from the called subscriber's number to the outgoing or incoming control information</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q3/78" definition-exists="false" ipc-concordant="H04Q3/78" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q3/78</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Temporary storage of information of calling or called subscriber </text><reference><text>intermediate storage means for telegraphic communication <class-ref scheme="cpc">H04L13/08</class-ref></text></reference></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="H04Q5/00" definition-exists="true" ipc-concordant="H04Q5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q5/02" definition-exists="false" ipc-concordant="H04Q5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with direct connection for all subscribers, i.e. party-line systems </text><reference><text><class-ref scheme="cpc">H04Q5/24</class-ref> takes precedence</text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q5/04" definition-exists="false" ipc-concordant="H04Q5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Signalling by currents in one or other or both line wires or additional wires</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q5/06" definition-exists="false" ipc-concordant="H04Q5/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Signalling by amplitude or polarity of dc</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q5/08" definition-exists="false" ipc-concordant="H04Q5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Signalling by continuous ac</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q5/10" definition-exists="false" ipc-concordant="H04Q5/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using single frequencies for different subscribers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q5/12" definition-exists="false" ipc-concordant="H04Q5/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using combinations of frequencies</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q5/14" definition-exists="false" ipc-concordant="H04Q5/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Signalling by pulses</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q5/16" definition-exists="false" ipc-concordant="H04Q5/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by predetermined number of pulses</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q5/18" definition-exists="false" ipc-concordant="H04Q5/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with indirect connection, i.e. through subordinate switching centre</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q5/20" definition-exists="false" ipc-concordant="H04Q5/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the subordinate centre permitting interconnection of subscribers connected thereto</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q5/22" definition-exists="false" ipc-concordant="H04Q5/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the subordinate centre not permitting interconnection of subscribers connected thereto</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q5/24" definition-exists="false" ipc-concordant="H04Q5/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for two-party-line systems</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q5/245" definition-exists="false" ipc-concordant="H04Q5/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q5/245</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Circuit arrangements in which for one subscriber low frequency speech and/or signalling signals proceed on the line, while for the other subscriber the low frequency speech and/or signalling signals are modulated upon a high frequency carrier signal</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="H04Q9/00" definition-exists="true" ipc-concordant="H04Q9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q9/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q9/02" definition-exists="false" ipc-concordant="H04Q9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q9/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Automatically-operated arrangements</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q9/04" definition-exists="false" ipc-concordant="H04Q9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q9/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for synchronous operation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q9/06" definition-exists="false" ipc-concordant="H04Q9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q9/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Calling by using amplitude or polarity of dc</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q9/08" definition-exists="false" ipc-concordant="H04Q9/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q9/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Calling by using continuous ac</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q9/10" definition-exists="false" ipc-concordant="H04Q9/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q9/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using single different frequencies</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q9/12" definition-exists="false" ipc-concordant="H04Q9/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q9/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using combinations of frequencies</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q9/14" definition-exists="false" ipc-concordant="H04Q9/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q9/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Calling by using pulses</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q9/16" definition-exists="false" ipc-concordant="H04Q9/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q9/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by predetermined number of pulses</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="H04Q11/00" definition-exists="true" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q11/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Selecting arrangements for multiplex systems </text><reference><text>multiplex systems <class-ref scheme="cpc">H04J</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04Q11/0001" definition-exists="true" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q11/0001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using optical switching</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q11/0003" definition-exists="true" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q11/0003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q11/0005" definition-exists="true" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q11/0005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Switch and router aspects</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="H04Q11/0007" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Construction</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0009" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0009</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using wavelength filters</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0011" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0011</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using wavelength conversion</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0013" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0013</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using gating amplifiers</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0015" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0015</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using splitting combining</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0016" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0016</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using wavelength multiplexing or demultiplexing</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0018" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0018</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using tunable transmitters or receivers</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/002" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using optical delay lines or optical buffers or optical recirculation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0022" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0022</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using fibre gratings</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0024" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0024</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using space switching</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0026" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using free space propagation (e.g. lenses, mirrors)</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="H04Q11/0028" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0028</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using holograms</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="H04Q11/003" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>H04Q2011/003</classification-symbol><class-title date-revised="2017-08-01"><title-part><CPC-specific-text><text>using switches based on microelectro-mechanical systems [MEMS]</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0032" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0032</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using static wavelength routers (e.g. arrayed waveguide grating router [AWGR] )</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0033" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0033</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using time division switching</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0035" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0035</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using miscellaneous components, e.g. circulator, polarisation, acousto/thermo optical</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="H04Q11/0037" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0037</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Operation</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0039" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0039</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Electrical control</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0041" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0041</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Optical control</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0043" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0043</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fault tolerance</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0045" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Synchronisation</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0047" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0047</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Broadcast; Multicast</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0049" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0049</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Crosstalk reduction; Noise; Power budget</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/005" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arbitration and scheduling</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="H04Q11/0052" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0052</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Interconnection of switches</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0054" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0054</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Distribute-route</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0056" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0056</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Clos</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0058" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0058</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Crossbar; Matrix</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/006" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Full mesh</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q11/0062" definition-exists="true" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q11/0062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Network aspects</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="H04Q11/0064" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0064</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arbitration, scheduling or medium access control aspects</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q11/0066" definition-exists="true" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q11/0066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Provisions for optical burst or packet networks</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04Q11/0067" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q11/0067</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="H04Q11/0069" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0069</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using dedicated optical channels</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="H04Q11/0098" definition-exists="false" ipc-concordant="H04Q11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2011/0098</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mesh</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04Q11/0464" definition-exists="false" ipc-concordant="H04Q11/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q11/0464</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Primary rate access circuits</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04Q11/08" definition-exists="false" ipc-concordant="H04Q11/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q11/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Time only switching</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q201/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2201/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Modular construction</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q201/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2201/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pivotable parts</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q201/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2201/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Printed circuits</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q201/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2201/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Screening, grounding or crosstalk reduction details</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q201/16" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2201/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Coaxial cable connectors</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q201/18" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2201/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rails</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q201/80" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2201/80</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in specific systems</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04Q201/802" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2201/802</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in data transmission systems</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04Q201/808" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2201/808</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in wireless transmission systems</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="H04Q209/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements in telecontrol or telemetry systems</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q209/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using a centralized architecture</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q209/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using a distributed architecture</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04Q209/25" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/25</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using a mesh network, e.g. a public urban network such as public lighting, bus stops or traffic lights</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q209/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using a wired architecture</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q209/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using a wireless architecture</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04Q209/43" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/43</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using wireless personal area networks [WPAN], e.g. 802.15, 802.15.1, 802.15.4, Bluetooth or ZigBee</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04Q209/47" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/47</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using RFID associated with sensors</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q209/50" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using a mobile data collecting device, e.g. walk by or drive by</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q209/60" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for transmitting utility meters data, i.e. transmission of data from the reader of the utility meter</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q209/70" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/70</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements in the main station, i.e. central controller</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04Q209/75" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/75</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by polling or interrogating the sub-stations</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="H04Q209/753" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/753</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>where the polling of the sub-stations is synchronous</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="H04Q209/756" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/756</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>where the polling of the sub-stations is cyclic, e.g. round-robin</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q209/80" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/80</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements in the sub-station, i.e. sensing device</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04Q209/82" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/82</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>where the sensing device takes the initiative of sending data</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="H04Q209/823" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/823</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>where the data is sent when the measured values exceed a threshold, e.g. sending an alarm</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="H04Q209/826" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/826</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>where the data is sent periodically</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04Q209/84" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/84</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Measuring functions</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="H04Q209/845" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/845</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>where the measuring is synchronized between sensing devices</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04Q209/86" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/86</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Performing a diagnostic of the sensing device</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04Q209/88" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/88</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Providing power supply at the sub-station</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="H04Q209/883" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/883</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>where the sensing device enters an active or inactive mode</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="H04Q209/886" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2209/886</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using energy harvesting, e.g. solar, wind or mechanical</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="H04Q213/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Indexing scheme relating to selecting arrangements in general and for multiplex systems</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/001" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Motorselectors</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/002" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Graphical representation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/003" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Constructional details</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/011" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/011</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Periodic optical structures, e.g. gratings, holograms</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/012" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/012</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tunable opticalo systems</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/013" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/013</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Optical shutters, e.g. LCD arrays</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/014" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/014</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Optical storage, not delay lines</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/015" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/015</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>3D-optical arrangement</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/016" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/016</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Optical subcarrier modulation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/017" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/017</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Optical polarisation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Relay switches</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/03" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/03</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>PAM</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/031" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/031</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>PCM</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/032" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/032</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Delta modulation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/033" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/033</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other modulation methods</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/034" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/034</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Codec</text></title-part><title-part><text>PCM compression</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/036" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/036</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Series parallel conversion</text></title-part><title-part><text>Parallel bit transmission</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/037" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/037</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Resonant transfer</text></title-part><title-part><text>Sample and hold</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/038" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/038</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Optical modulation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Coordinate switches</text></title-part><title-part><text>Crossbar switches</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/042" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/042</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Elements placed in matrix relation, not serving as connection switch</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/046" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Binary switch (Beta element)</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/05" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/05</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Software aspects</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/052" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/052</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Multi-tasking</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/053" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/053</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Priority levels</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/054" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/054</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Expert systems, e.g. neural networks</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/055" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/055</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Linked lists</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/056" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/056</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Software routines, e.g. finite state machines</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/058" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/058</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>IRQ</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/061" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preselector</text></title-part><title-part><text>Second line switch</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/062" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Finder switch (e.g. line finder, call finder)</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/063" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Strowger-switch as finder switch</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/064" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/064</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cascaded finder or preselector switches</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/065" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Group selector</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/066" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Switch with two or more wipersets</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/067" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/067</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Finder switch serving as final selector</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/068" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Final selector</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/069" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/069</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Panel switches</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/07" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/07</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call distribution</text></title-part><title-part><text>Call detection</text></title-part><title-part><text>Call signalling by common apparatus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/072" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/072</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sequence circuits</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/076" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/076</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Distributing frame</text></title-part><title-part><text>Cross connect</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Power supply</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/082" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/082</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Phantom circuits</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/09" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/09</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Subscriber related equipment</text></title-part><title-part><text>Analog terminal</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/091" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/091</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Indication of kind/number of subscriber</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/092" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/092</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Scanning of (subscriber) lines, registers, translators</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/093" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/093</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Personal computer</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/094" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/094</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Range extender</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/095" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/095</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>User access</text></title-part><title-part><text>PIN code</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/096" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/096</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Digital subscriber terminal</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/097" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/097</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Numbering</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/098" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/098</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mobile subscriber</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/099" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/099</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Loop multiplexer (not ISDN BRI/PRI; not 381), e.g. loop splitter</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Register</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/101" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/101</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Discriminating selectors</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/102" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/102</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Common translator</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/103" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/103</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Memories</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/104" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/104</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Central control</text></title-part><title-part><text>Computer control</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/106" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/106</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Microcomputer</text></title-part><title-part><text>Microprocessor</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/107" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/107</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control equipment for part of the connection</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/109" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/109</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Initialising</text></title-part><title-part><text>Downloading of parameters or program routines</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/11" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/11</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sequence switches</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call indicator, e.g. number indicator</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/121" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/121</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Marker</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/124" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/124</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pulse distributor</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Charging</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13001" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Step by step switches</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13003" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13003</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Constructional details of switching devices</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1301" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1301</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Optical transmission, optical switches</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13012" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13012</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hybrid fiber coax, HFC</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13016" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13016</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Optical subcarrier modulation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1302" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1302</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Relay switches</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1303" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1303</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pulse amplitude modulation, PAM</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13031" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13031</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pulse code modulation, PCM</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13034" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13034</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>A/D conversion, code compression/expansion</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13036" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13036</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Serial/parallel conversion, parallel bit transmission</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13038" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13038</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Optical modulation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13039" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13039</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Asymmetrical two-way transmission, e.g. ADSL, HDSL</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1304" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1304</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Coordinate switches, crossbar, 4/2 with relays, coupling field</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13046" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>H04Q2213/13046</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Binary switch, β-element</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1305" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1305</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Software aspects</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13051" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13051</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Software generation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13052" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13052</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Multitasking</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13053" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13053</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Priority levels</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13054" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13054</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Expert system</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13056" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13056</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Routines, finite state machines</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13057" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13057</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Object-oriented software</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13058" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13058</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Interrupt request</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1307" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1307</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call setup</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13072" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13072</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sequence circuits for call signaling, ACD systems</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13076" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13076</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Distributing frame, MDF, cross-connect switch</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1308" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1308</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Power supply</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13082" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13082</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Power supply via phantom line</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1309" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1309</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Apparatus individually associated with a subscriber line, line circuits</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13091" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13091</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>CLI, identification of calling line</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13092" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13092</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Scanning of subscriber lines, monitoring</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13093" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13093</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Personal computer, PC</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13094" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13094</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Range extender</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13095" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13095</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>PIN / Access code, authentication</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13096" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13096</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Digital apparatus individually associated with a subscriber line, digital line circuits</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13097" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13097</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Numbering, addressing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13098" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13098</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mobile subscriber</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13099" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13099</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Loop multiplexer</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/131" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/131</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Register</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13102" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13102</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Common translator</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13103" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13103</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Memory</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13104" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13104</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Central control, computer control</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13106" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13106</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Microprocessor, CPU</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13107" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13107</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control equipment for a part of the connection, distributed control, co-processing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13109" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13109</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Initializing, personal profile</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13121" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13121</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Marker</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13124" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13124</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pulse distributor</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1313" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1313</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Metering, billing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13134" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13134</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Coin boxes, payphone, prepaid</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13136" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13136</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Collect call </text><reference><text>information service <class-ref scheme="cpc">H04Q2213/13376</class-ref></text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13138" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13138</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Least cost routing, LCR</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13139" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13139</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fraud detection/prevention</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13141" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13141</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hunting for free outlet, circuit or channel</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13144" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13144</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Searching path through number of switching stages or nodes, e.g. revertive blocking</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13145" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13145</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rerouting upon failure</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13146" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13146</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rerouting upon blocking/overload, rearrangement</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13148" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13148</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Maximum profit routing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13149" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13149</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Change of provider, e.g. network or service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1315" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1315</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call waiting</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13152" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13152</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Callback</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13156" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13156</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Automatic digit redialling, automatic call retry</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1316" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1316</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Service observation, testing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13162" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13162</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fault indication and localisation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13163" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13163</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fault alarm</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13164" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13164</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Traffic (registration, measurement,...)</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13166" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13166</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fault prevention</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13167" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13167</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Redundant apparatus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13168" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13168</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Error Correction</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13172" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13172</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Supervisory signals</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13173" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13173</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Busy signals</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13174" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13174</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Data transmission, file transfer</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13175" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13175</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Graphical user interface [GUI], WWW interface, visual indication</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13176" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13176</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Common channel signaling, CCS7</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13178" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13178</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control signals</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13179" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13179</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fax, still picture</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1318" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1318</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ringing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1319" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1319</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Amplifier, attenuation circuit, echo suppressor</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13191" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13191</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Repeater</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13194" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13194</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Four wire connection, transmission</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13196" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13196</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Connection circuit/link/trunk/junction, bridge, router, gateway</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13199" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13199</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Modem, modulation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/132" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/132</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Multiple-zone-metering</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13201" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13201</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Change-over of service during connection</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13202" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13202</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Network termination [NT]</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13203" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>H04Q2213/13203</classification-symbol><class-title date-revised="2015-10-01"><title-part><text>Exchange termination [ET]</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13204" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13204</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Protocols</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13205" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13205</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Primary rate access, PRI</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13206" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13206</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>User-to-user signaling, UUS</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13208" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13208</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Inverse multiplexing, channel bonding, e.g. TSSI aspects</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13209" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13209</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>ISDN</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13213" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13213</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Counting, timing circuits</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13214" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13214</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Clock signals</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13215" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13215</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Code checking, CRC</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13216" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13216</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Code signals, frame structure</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13217" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13217</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cranckback in routing, trombone connection, loopback circuit</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1322" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1322</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>PBX</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13222" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13222</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>PBX circuits in public exchange, centrex</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13224" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13224</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Off-net subscriber, dial in to/out from network, teleworking</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1323" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1323</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Party line</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1324" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1324</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Conference call</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13242" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13242</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Broadcast, diffusion, multicast, point-to-multipoint (1 : N)</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13246" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13246</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Instant speaker's algorithm [ISA]</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13248" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13248</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Multimedia</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1325" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1325</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Priority service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13251" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13251</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Restricted service, class of service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13256" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13256</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call screening</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1326" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1326</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Consultation call, broker's call, call hold, toggling</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1327" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1327</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Release and resetting of connection</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13271" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13271</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Forced release</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13272" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13272</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Premature release</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13274" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13274</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call rejection, call barring</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1328" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1328</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call transfer, e.g. in PBX</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13281" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13281</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call transfer/forward at night</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13282" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13282</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call forward, follow-me, call diversion</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13284" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13284</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call tracing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13286" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13286</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Direct in-dialling in PBX, DDI</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13287" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13287</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Wake-up call service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13288" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13288</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Closed user groups, CUG</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1329" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1329</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Asynchronous transfer mode, ATM</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13291" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13291</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Frequency division multiplexing, FDM</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13292" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13292</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Time division multiplexing, TDM</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13293" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13293</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>TASI, irregular time division, burst switching</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13294" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13294</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>CDMA, code division multiplexing, i.e. combinations of <class-ref scheme="cpc">H04Q2213/13291</class-ref> and/or <class-ref scheme="cpc">H04Q2213/13292</class-ref> with space division</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13295" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13295</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Wavelength multiplexing, WDM</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13296" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13296</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Packet switching, X.25, frame relay</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13297" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13297</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Coupling different rates in TDM systems, data rate adaptation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13298" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13298</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Local loop systems, access network</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13299" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13299</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/133" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/133</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Multiple-time-metering</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13302" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13302</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Magnetic elements</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13305" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13305</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Transistors, semiconductors in general</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13306" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13306</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ferro-electric elements</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1331" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1331</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Delay elements, shift registers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1332" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1332</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Logic circuits</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13322" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13322</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Integrated circuits</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1333" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1333</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Random systems</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13331" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13331</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Abbreviated dialling</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13332" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13332</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Broadband, CATV, dynamic bandwidth allocation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13333" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13333</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Earth satellites</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13334" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13334</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Key telephone systems</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13335" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13335</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Simulation, emulation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13336" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13336</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Store & forward, messaging systems </text><reference><text>email <class-ref scheme="cpc">H04Q2213/13375</class-ref></text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13337" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13337</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Picturephone, videotelephony</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13338" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13338</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Do-not-disturb</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13339" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13339</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ciphering, encryption, security</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1334" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1334</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Configuration within the switch</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13341" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13341</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Connections within the switch</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13342" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13342</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangement of switches in the network</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13343" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13343</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Neural networks</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13344" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13344</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Overflow</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13345" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13345</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Intelligent networks, SCP</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13348" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13348</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Channel/line reservation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13349" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13349</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Network management</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13352" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13352</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Self-routing networks, real-time routing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13353" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13353</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Routing table, map memory</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1336" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1336</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Synchronisation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13361" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13361</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Synchronous systems</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13362" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13362</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Asynchronous systems</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13363" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13363</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pulse stuffing, bit stuffing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13367" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13367</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hierarchical multiplexing, add-drop multiplexing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1337" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1337</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Operator, emergency services</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13372" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13372</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Intercepting operator</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13374" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13374</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Paging</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13375" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13375</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electronic mail</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13376" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13376</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Information service, downloading of information, 0800/0900 services</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13377" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13377</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Recorded announcement</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13378" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13378</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Speech recognition, speech analysis</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1338" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1338</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Inter-exchange connection</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13381" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13381</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pair-gain system, digital loop carriers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13383" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13383</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hierarchy of switches, main and subexchange, e.g. satellite exchange</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13384" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13384</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Inter-PBX traffic, PBX networks, e.g. corporate networks</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13385" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13385</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Off-net subscriber</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13386" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13386</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Line concentrator</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13387" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13387</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call gapping</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13388" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13388</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Saturation signaling systems</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13389" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13389</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>LAN, internet</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/1339" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/1339</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fixed association of channels</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13391" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13391</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Channel assigned to connections</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13392" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13392</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Channels assigned according to rules</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13393" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13393</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Time slot switching, T-stage, time slot interchanging, TSI</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13395" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13395</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Permanent channel, leased line</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13396" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13396</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Signaling in general, in-band signalling</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13399" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13399</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Virtual channel/circuits</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/134" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/134</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Coin box</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13402" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13402</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Data transmission out of voice frequency band </text><reference><text>ADSL <class-ref scheme="cpc">H04Q2213/13039</class-ref></text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13405" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13405</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Dual frequency signaling, DTMF</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13407" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13407</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Detection of data transmission mode</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/135" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/135</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Service creation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13501" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13501</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Feature interactions</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13502" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13502</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>primitives - inc. service-independent building blocks [SIBBs]</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13503" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13503</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>object-oriented systems</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13504" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13504</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>client/server architectures</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13505" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13505</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>management information base [MIB]</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13511" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13511</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>reservation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13512" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13512</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>800 - freefone</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13513" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13513</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>UPT - personal as opposed to terminal mobility, inc. number portability</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13514" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13514</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>quality of service - inc. grade of service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13515" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13515</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>authentication, authorisation - fraud prevention</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13516" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13516</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>agents or brokers - user, terminal etc., also OSI agent/managers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13517" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13517</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>SLEE - service logic execution</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13521" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13521</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>fault management</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13522" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13522</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>traffic management</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13523" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13523</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>bandwidth management, e.g. capacity management</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13524" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13524</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>cost management </text><reference><text>least cost <class-ref scheme="cpc">H04Q2213/13138</class-ref></text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13525" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13525</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>GUI - graphical user interface, inc. for service creation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13526" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13526</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>resource management</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13527" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13527</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>protocols - X.25, TCAP etc.</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13528" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13528</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>SCP architecture</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13531" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13531</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>virtual networks - inc. PVN</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13532" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13532</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>mobile networks</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13533" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13533</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>multivendor and hybrid, e.g. public/private, networks, inc. international</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13534" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13534</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Internet - WWW, HTML, browsers etc.</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13535" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13535</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>distributed systems - also domains in service creation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13541" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13541</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>routing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13542" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13542</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>numbering plans, e.g. number re-allocation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13543" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13543</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>network planning, configuration management, e.g. for growth</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13544" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13544</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>modeling or simulation, particularly of networks</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13545" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13545</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>monitoring of signaling messages, intelligent network</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13546" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13546</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Intelligent Peripheral</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13547" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13547</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>subscriber, e.g. profile, database, database access</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13548" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13548</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>call modeling, e.g. Basic Call State Model</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13561" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13561</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>congestion - inc. overflow</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13562" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13562</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>blocking</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13563" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13563</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>call gapping, e.g. to prevent congestion</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13564" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13564</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>load balancing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13565" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13565</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>restoration, e.g. disaster recovery, self-healing networks</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13566" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13566</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>mediation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/13567" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/13567</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>negotiation, management policy, goals</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/136" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/136</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Collect call, e.g. 800 service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/138" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/138</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Least cost routing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Busy test, e.g. marking busy</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/141" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/141</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hunting for free outlet, circuit, channel</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/144" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/144</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Searching a free path through cascaded switching stages</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/145" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rerouting, e.g. on failure</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/146" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/146</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rearrangement</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/15" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/15</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Waiting</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/152" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/152</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Automatic call retry</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/156" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/156</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Automatic redialling</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/16" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Service observation</text></title-part><title-part><text>Fault circuit</text></title-part><title-part><text>Testing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/161" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/161</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Blocking or cutoff of faulty apparatus, e.g. timed out</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/162" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/162</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fault indication, e.g. localisation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/163" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/163</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fault alarm</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/164" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/164</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Traffic registration</text></title-part><title-part><text>Adaptation of traffic possibilities</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/166" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/166</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Prevention of faults</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/167" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/167</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Redundancy</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/171" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/171</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Number indicating signals (no dial signals)</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/172" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/172</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Supervisory signals</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/173" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/173</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Busy signal</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/174" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/174</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Data transmission</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/175" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/175</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other signals</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/176" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/176</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Common channel signalling</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/177" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/177</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Number sending signals, e.g. dialling tone, proceed to send</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/178" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/178</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control signals, e.g. also service connection</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/179" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/179</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Facsimile</text></title-part><title-part><text>Fax, e.g. still picture</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/18" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ringing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/182" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/182</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ring trip</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/19" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/19</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Echo-cancelling</text></title-part><title-part><text>Hybrid</text></title-part><title-part><text>Amplifier</text></title-part><title-part><text>Attenuator</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/191" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/191</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Repeater</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/192" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/192</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Common amplifier for bidirectional traffic</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/194" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/194</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Four-wire connection or transmission</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/196" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/196</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Connection-circuit</text></title-part><title-part><text>Trunk</text></title-part><title-part><text>Junction circuit</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/197" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/197</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ping-pong transmission</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/198" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/198</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Temporary associated devices</text></title-part><title-part><text>Pooled adapters</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/199" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/199</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Modem</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>ISDN</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/201" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/201</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Change-over service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/202" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/202</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Network termination [NT]</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/203" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/203</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Exchange termination [ET]</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/204" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/204</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>ISDN protocol</text></title-part><title-part><text>ISO 7</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/205" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/205</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Primary rate access</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/206" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/206</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>User-to-user signalling</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/208" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/208</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Inverse multiplexing</text></title-part><title-part><text>Time slot sequence integrity [TSSI] aspects</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/21" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/21</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Impulse transmission</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/211" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/211</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Impulse correction or reshaping</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/212" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/212</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Absorbing of digits</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/214" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2019-05-01" status="published"><classification-symbol>H04Q2213/214</classification-symbol><class-title date-revised="2019-05-01"><title-part><text>Phase shifted impulses</text></title-part><title-part><text>Clock signals</text></title-part><title-part><text>Timing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/215" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/215</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Code checking</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/216" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/216</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Code signals</text></title-part><title-part><text>Framing (not synchronizing)</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/217" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/217</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Setting of switch by means of pulses</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/218" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/218</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bistable relays, e.g. Ferreed</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/22" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>PBX</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/222" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/222</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>PBX circuits in public exchange (Centrex)</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/23" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/23</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Partyline</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/24" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Conference circuit</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/242" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/242</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Broadcast and multicast (1:N)</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/243" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/243</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Con-cast, e.g. multipoint-point (N:1)</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/246" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/246</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Instant speaker's algorithm [ISA]</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/25" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/25</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preferential service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/251" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/251</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Restricted service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/252" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/252</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Breaking-in on existing connection</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/256" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/256</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call screening</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/26" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call-back</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/27" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/27</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Release</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/271" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/271</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Forced release</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/272" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/272</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Premature release</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/274" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/274</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call rejection</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/28" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call transfer</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/281" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/281</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Prepared call transfer, e.g. night service, intercepting service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/282" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/282</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call forwarding</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/284" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/284</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call tracing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/286" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/286</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Direct inward dialling [PBX]</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/287" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/287</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Call service, e.g. morning call service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/29" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/29</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>ATM</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/291" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/291</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Frequency division multiplex</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/292" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/292</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Time (de)multiplexing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/293" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/293</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Irregular time switching, e.g. TASI</text></title-part><title-part><text>Burst switching</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/294" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/294</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other multiplexing systems, e.g. codemultiplex, TDM, FDM, FDM and Space division, TDM and Space division</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/295" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/295</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Wavelength division multiplex</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/296" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/296</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Packet switching</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/297" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/297</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Coupling circuits between different (rate) TDM systems</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/298" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/298</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Loop or ring system</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/299" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/299</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/301" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/301</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tubes and other non-linear elements with 2 electrodes, e.g. diodes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/302" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/302</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Magnetic elements</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/303" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/303</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tubes and other non-linear elements with more than two electrodes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/304" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04Q2213/304</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>Superconductors</text></title-part><title-part><text>Thermistors</text></title-part><title-part><text>Varistors</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/305" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/305</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Transistors</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/306" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/306</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ferro-electric elements</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/307" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/307</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hall elements</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/308" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/308</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Photo conductors</text></title-part><title-part><text>Photo elements</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/31" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/31</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Delay devices</text></title-part><title-part><text>Circuits, e.g. shift memories</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/32" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Logic elements</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/322" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/322</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Integrated circuit</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/33" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/33</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Special systems</text></title-part><title-part><text>Special service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/331" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/331</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Abbreviated dialing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/332" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/332</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Broadband system</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/333" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/333</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Systems with earth-satellites</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/334" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/334</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Key telephone system</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/335" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/335</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Simulation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/336" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/336</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Store and forward, e.g. message switching</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/337" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/337</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Picturephone</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/338" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/338</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Do not disturb</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/339" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/339</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ciphering/encryption</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/34" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>General scheme</text></title-part><title-part><text>Position of components in an exchange</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/341" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/341</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Contactbank connections</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/342" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/342</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>General scheme</text></title-part><title-part><text>Position of exchanges</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/343" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/343</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Neural network</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/344" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/344</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Overflow</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/345" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/345</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Intelligent network</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/346" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/346</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Switch with inverted grouping</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/347" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/347</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nodal network</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/348" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/348</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reservation of lines/channels</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/349" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/349</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Network management</text></title-part><title-part><text>Expert system</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/35" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/35</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Separate control and speech paths, e.g. route-searching planes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/352" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/352</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Self-routing switch</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/353" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/353</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Map memory</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/36" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Synchronisation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/361" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/361</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Synchronous system</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/362" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/362</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Asynchronous system</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/363" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/363</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bit or pulse stuffing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/366" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/366</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Integrated systems, e.g. transparency</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/367" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/367</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Multiple multiplexing</text></title-part><title-part><text>Hierarchical multiplexing</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/37" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/37</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Operator</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/372" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/372</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Intervention by operator</text></title-part><title-part><text>Intercepting operator</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/374" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/374</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Paging</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/375" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/375</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electronic mail</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/376" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/376</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Information service</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/377" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/377</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Recorded announcement</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/378" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/378</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Speech recognition</text></title-part><title-part><text>Speech analysis</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/38" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Interexchange connections, e.g. connections of different kinds of networks</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/381" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/381</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pair gain system</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/382" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/382</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Provisions for interexchange traffic in the local exchange</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/383" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/383</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Main and subexchange, e.g. satellite exchanges</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/384" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/384</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Inter-PBX traffic</text></title-part><title-part><text>PBX networks</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/385" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/385</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Traffic in PBX to and from public exchange</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/386" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/386</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Line concentrator</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/388" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/388</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Saturation signalling system</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/39" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/39</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Channels assigned to subscribers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/391" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/391</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Channel allocation to connections</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/392" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/392</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Channel allocation - special rules</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/393" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/393</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Channel interchanging, e.g. time slot switching</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/394" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/394</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Channel assignment without time slot switching</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/395" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/395</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>(Semi)permanent channels, e.g. leased lines</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/396" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/396</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Signalling in general</text></title-part><title-part><text>Special register channel</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/399" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/399</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Virtual channel allocation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/401" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/401</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>DC and voltages of different kinds or values</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/402" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/402</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>AC outside voice band</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/403" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/403</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Voice frequency</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/405" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04Q2213/405</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Voice frequency current used for digit selection</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04Q213/407" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-07-01" status="published"><classification-symbol>H04Q2213/407</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Push-button dialling </text><reference><text>not <class-ref scheme="cpc">H04Q2213/405</class-ref></text></reference></title-part></class-title></classification-item></classification-item></classification-item></classification-item></class-scheme> |