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ITU-T G.961 Digital transmission system on metallic local lines for ISDN basic rate access
ITU-T H.331 Broadcasting type audiovisual multipoint systems and terminal equipment
ITU-T I.140 Attribute technique for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN
ITU-T I.333 Terminal selection in ISDN
ITU-T I.431 Primary rate user-network interface - Layer 1 specification
ITU-T I.500 General structure of the ISDN interworking Recommendations
ITU-T I.515 Parameter exchange for ISDN interworking
ITU-T I.520 General arrangements for network interworking between ISDNs
ITU-T I.530 Network interworking between an ISDN and a public switched telephone network (PSTN)
ITU-T N.10 Limits for the lining-up of international sound-programme links and connections
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