ETSI PRETS 300 300-1996 传输和复用(TM).同步数字体系(SDH).基于同步数字体系(SDH)的用户网络接入.宽带综合业务数字网(B-ISDN)应用物理层接口(第2版)
Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH); SHD Based User Network Access; Physical Layer Interfaces for Broadband Integrated Services Digital Network (B-ISDN) Applications Second Edition