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ETSI ETS 300 746
- Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH); Network protection schemes; Automatic Protection Switch (APS) protocols and operation
- standard by European Telecommunications Standards Institute, 02/01/1997
- Publisher: ETSI
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Specifies the switching initiation criteria, operations and APS protocols of SDH shared multiplex section bidirectional self healing ring(MS-USHR), multiplex section linear protection, and path trial and subnetwork connection (SNC) protection schemes.