Transmission and Multiplexing (TM); Access transmission system on metallic access cables; Symmetrical single pair high bitrate Digital Subscriber Line (SDSL); Part 1: Functional requirements
传输和多路复用(TM);金属接入电缆上的接入传输系统;对称单对高速数字用户线;第1部分:功能需求
To define the functional requirements for an advanced transmission system based on the TS 101 135. The implementation of a new line code shall be studied based on know how elaborated by ANSI T1E1.4. Additional features taken into acount are: transport of narrowband signals ISDN-BA or POTS inside the HDSL core frame, rate adaptation and asymmetric duplex transmission.