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    ITU Q.500 : 1988

    DIGITAL LOCAL, COMBINED, TRANSIT AND INTERNATIONAL EXCHANGES, INTRODUCTION AND FIELD OF APPLICATION

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU Q.1101 : 1988

    GENERAL REQUIREMENTS FOR THE INTERWORKING OF THE TERRESTRIAL TELEPHONE NETWORK AND INMARSAT STANDARD A SYSTEM

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU SERIES J SUPP 3 : 1998

    GUIDELINES FOR THE IMPLEMENTATION OF RECOMMENDATION J.111 "NETWORK INDEPENDENT PROTOCOLS" - EXAMPLE OF DIGITAL VIDEO BROADCASTING (DVB) SYSTEMS FOR INTERACTIVE SERVICES

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU T.510 : 1993

    GENERAL OVERVIEW OF THE T.510-SERIES RECOMMENDATIONS

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU H.235.1 : 2005

    H.323 SECURITY FRAMEWORK: BASELINE SECURITY PROFILE

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU X.402 : 1999

    INFORMATION TECHNOLOGY - MESSAGE HANDLING SYSTEMS (MHS): OVERALL ARCHITECTURE

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU Y.2051 : 2008

    GENERAL OVERVIEW OF IPV6-BASED NGN

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU E.862 : 1992

    DEPENDABILITY PLANNING OF TELECOMMUNICATION NETWORKS

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU Q.699.1 : 1998

    INTERWORKING BETWEEN ISDN ACCESS AND NON-ISDN ACCESS OVER ISDN USER PART OF SIGNALLING SYSTEM NO. 7 - SUPPORT OF VPN APPLICATIONS WITH PSS1 INFORMATION FLOWS

    International Telecommunications Union (CCIR) and (CCITT)

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    ITU M.2130 : 2000

    OPERATIONAL PROCEDURES FOR THE MAINTENANCE OF THE TRANSPORT NETWORK

    International Telecommunications Union (CCIR) and (CCITT)