Transmission and Multiplexing (TM) - Generic requirements of transport functionality of equipment - Part 4-1: Synchronous Digital Hierarchy (SDH) path layer functions (Endorsement of the English version EN 300417-4-1 V 1.2.1 (2001-10) as German Standard)
传输和多路复用(TM).设备传输功能的一般要求.第4-1部分:同步数字体系(SDH)路径层功能