DIN EN 301129-2000 传输和多路复用(TM).数字无线中继系统(DRRS).同步数字分层体系(SDH),SDH-DRRS的系统性能参数的监测.
Transmission and Multiplexing (TM) - Digital Radio Relay Systems (DRRS) - Synchronous Digital Hierarchy (SDH); system performance monitoring parameters of SDH DRRS (Endorsement of the English version EN 301129 V 1.1.2 (1999-05) as German standard)
The document deals with the additional specific requirements on system performance monitoring parameters of digital radio relay systems with synchronous digital hierarchy.