DIN EN 300417-5-1-2002 传输和多路复用(TM).设备传输功能性的一般要求.第5-1部分:准同步数字系列(SDH)级路径分层功能 (英文版本核准本 EN 300417-5-1 V 1.2.1 (2001-10) 作为德国标准)
Transmission and Multiplexing (TM) - Generic requirements of transport functionality of equipment - Part 5-1: Plesiochronous Digital Hierarchy (PDH) path layer functions (Endorsement of the English version EN 300417-5-1 V 1.2.1 (2001-10) as German Standar