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ETSI TS 102 080
M00000904
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ETSI TS 102 080 Transmission and Multiplexing (TM); Integrated Services Digital Network (ISDN) basic rate access; Digital transmission system on metallic local lines
standard by European Telecommunications Standards Institute, 07/01/2003
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The present document covers the characteristics and parameters of a digital transmission system at the network side of the NT1 to form part of the access digital section for the Integrated Services Digital Network (ISDN) basic rate access using echo cancellation method.The present document specifies support for:full duplex; andbit sequence independent;transmission of two B-channels and one D-channel as defined in ITU-T Recommendation I.412 [11] and the supplementary functions of the access digital section defined in ETR 001 [6].