ETSI EN 300 462-5-1-1998 传输和复用(TM).同步网络的一般要求.第5-1部分:适于同步数字体系(SDH)设备操作的子钟的定时特性(版本1.1.1)
Transmission and Multiplexing (TM); Generic Requirements for Synchronization Networks; Part 5-1: Timing Characteristics of Slave Clocks Suitable for Operation in Synchronous Digital Hierarchy (SDH) Equipment (V1.1.1)