X.56 Interface between synchronous data networks using an 8 + 1988 I 15 11 None 2 envelope structure and single channel per carrier (SCPC) satellite channels X.57 Method of transmitting a single lower speed data channel 1988 I 15 11 None on a 64 kbit/s data stream X.58 Fundamental parameters of a multiplexing scheme for the 1988 I 15 11 None international interface between synchronous non-switched data networks using no envelope structure X.60 Common channel signalling for circuit switched data 1988 I 13 20 None applications X.61 Signalling System No. 7 - Data user part Withdrawn None X.70 Terminal and transit control signalling system for 1988 I 13 20 None services on international circuits between anisochronous data networks X.71 Decentralized terminal and transit control signalling 1988 I 13 20 None system on international circuits between synchronous data networks X.75 Packet-switched signalling system between public 1996 I 13 20 Trevor Davies None networks providing data transmission services Cor.1 (1998) I Network-to-network interface between public networks 2003 I 13 12 Claude Kawa None X.76 providing PVC and/or SVC frame relay data transmission service X.77 Interworking procedures between PSPDNs via B-ISDN 1997 I 13 20 None Cor.1 (2000) I X.78 Interworking procedures between networks providing 1999 I 13 20 None frame relay data transmission service via B-ISDN Cor.1 (2000) I X.80 Interworking of interexchange signalling systems for 1988 I 13 20 None circuit switched data services X.81 Interworking between an ISDN circuit-switched and a 1988 I 13 20 None circuit-switched public data network (CSPDN) X.82 Detailed arrangements for interworking between CSPDNs 1988 I 13 20 None and PSPDNs based on Recommendation T.70 X.84 Frame relay MPLS network interworking 2004 I 13 12 Claude Kawa None – X.85/ IP over SDH using LAPS 2001 I 15 11 Shaohua Yu None Y.1321 Cor.1 (2005) I
X.56 Interface between synchronous data networks using an 8 + 2 envelope structure and single channel per carrier (SCPC) satellite channels 1988 I 15 11 None X.57 Method of transmitting a single lower speed data channel on a 64 kbit/s data stream 1988 I 15 11 None X.58 Fundamental parameters of a multiplexing scheme for the international interface between synchronous non-switched data networks using no envelope structure 1988 I 15 11 None X.60 Common channel signalling for circuit switched data applications 1988 I 13 20 None X.61 Signalling System No. 7 - Data user part Withdrawn None X.70 Terminal and transit control signalling system for services on international circuits between anisochronous data networks 1988 I 13 20 None X.71 Decentralized terminal and transit control signalling system on international circuits between synchronous data networks 1988 I 13 20 None X.75 Packet-switched signalling system between public networks providing data transmission services 1996 Cor.1 (1998) I I 13 20 Trevor Davies None X.76 Network-to-network interface between public networks providing PVC and/or SVC frame relay data transmission service 2003 I 13 12 Claude Kawa None X.77 Interworking procedures between PSPDNs via B-ISDN 1997 Cor.1 (2000) I I 13 20 None X.78 Interworking procedures between networks providing frame relay data transmission service via B-ISDN 1999 Cor.1 (2000) I I 13 20 None X.80 Interworking of interexchange signalling systems for circuit switched data services 1988 I 13 20 None X.81 Interworking between an ISDN circuit-switched and a circuit-switched public data network (CSPDN) 1988 I 13 20 None X.82 Detailed arrangements for interworking between CSPDNs and PSPDNs based on Recommendation T.70 1988 I 13 20 None X.84 Frame relay – MPLS network interworking 2004 I 13 12 Claude Kawa None X.85/ Y.1321 IP over SDH using LAPS 2001 Cor.1 (2005) I I 15 11 Shaohua Yu None
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