scope:

The present document defines the additional specific performance monitoring functional architecture and requirements to be used for management of Digital Radio Relay Systems (DRRS) which use the Synchronous Digital Hierarchy (SDH). Considering that: - ETS 300 635 [4] and ITU-R Recommendation F.750 [3] define the SDH radio specific functional blocks for transmission at STM-n data rate; - ETS 300 785 [5] and ITU-R Recommendation F.750 [3] define the SDH radio specific functional blocks for transmission at Synchronous Transport Module 0 (STM-0) data rate; - EN 301 167 [6], ETS 300 417 [7], ITU-T Recommendations G.783 [1] and G.784 [2] define the performance monitoring architecture and requirements for generic functional blocks used on SDH DRRS and other SDH equipment; - ITU-T Recommendation M.3010 [8] defines the standardized logical and functional Telecommunication Management Network (TMN) architecture.