UNE-EN 300462-2-1 V1.2.1:2004 Transmission and Multiplexing (TM). Generic requirements for synchronization networks. Part 2-1: Synchronization network architecture based on SDH networks (Endorsed by AENOR in May of 2004.)
2005UNE-EN 300462-2-1 V1.1.2:2005 Transmission and Multiplexing (TM); Generic requirements for synchronization networks; Part 2-1: Synchronization network architecture (Endorsed by AENOR in May of 2005.)
2005UNE-EN 300462-2-1 V1.1.1:2005 Transmission and Multiplexing (TM); Generic requirements for synchronization networks; Part 2-1: Synchronization network architecture (Endorsed by AENOR in May of 2005.)
2004UNE-EN 300462-2-1 V1.2.1:2004 Transmission and Multiplexing (TM). Generic requirements for synchronization networks. Part 2-1: Synchronization network architecture based on SDH networks (Endorsed by AENOR in May of 2004.)