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    ITU V.11 : 1996

    ELECTRICAL CHARACTERISTICS FOR BALANCED DOUBLE-CURRENT INTERCHANGE CIRCUITS OPERATING AT DATA SIGNALLING RATES UP TO 10 MBIT/S

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU I.461 : 1993

    SUPPORT OF X.21, X.21 BIS AND X.20 BIS BASED DATA TERMINAL EQUIPMENTS (DTES) BY AN INTEGRATED SERVICES DIGITAL NETWORK (ISDN)

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU G.8031 : 2015

    ETHERNET LINEAR PROTECTION SWITCHING

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU F.108 : 1988

    OPERATING RULES FOR INTERNATIONAL PHOTOTELEGRAPH CALLS TO MULTIPLE DESTINATIONS

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU R BT 1846 : 2008

    NOTATIONS FOR VIDEO SYSTEMS

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU I.141 : 1988

    ISDN NETWORK CHARGING CAPABILITIES ATTRIBUTES

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU X.228 : 88 CORR 1 2000

    RELIABLE TRANSFER: PROTOCOL SPECIFICATION

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU G.622 : 1988

    CHARACTERISTICS OF 1.2/4.4 MM COAXIAL CABLE PAIRS

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU R SM 667 : 1990

    NATIONAL SPECTRUM MANAGEMENT DATA

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU K.55 : 2002

    International Telecommunications Union (CCIR) and (CCITT)