This Recommendation 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 ISDN basic rate access. The specification of transmission system characteristics at the network side of the NT1 does not correspond to a reference point defined in the reference configuration for ISDN user-network interfaces in Recommendation I.411.The system will support the– full duplex;– bit sequence independenttransmission of two B-channels and one D-channel as defined in Recommendation I.412 and the supplementaryfunctions of the access digital section defined in Recommendation I.603 for operation and maintenance.This Recommendation describes 4 transmission systems using different line codes and transmission methods. They are given in Appendices I to IV as examples following the understanding that only one system should be recommended and,provided in an annex to this Recommendation when this is achieved in future.
ITU-T G.961-1993由国际电信联盟 IX-ITU 发布于 1993-03-01。
ITU-T G.961-1993 在中国标准分类中归属于: M11 通信网技术体制。
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号