Transmission and Multiplexing (TM) - Management of Synchronous Digital Hierarchy (SDH) transmission equipment - Fault management and performance monitoring; functional description (Endorsement of the English version EN 301167 V 1.1.1 (1998-08) as German standard)
传输和多路复用(TM)-同步数字体系(SDH)传输设备的管理-故障管理和性能监测;功能说明(认可英语版EN 301167 V 1.1.1(1998-08)为德国标准)