Integrated Services Digital Network (ISDN); Primary rate User-Network Interface (UNI); Part 1: Layer 1 specification. (Endorsed by AENOR in November of 2003.)
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Integrated Services Digital Network (ISDN); Primary rate User-Network Interface (UNI); Part 1: Layer 1 specification. (Endorsed by AENOR in November of 2003.)
Integrated Services Digital Network (ISDN); Primary rate User-Network Interface (UNI); Part 1: Layer 1 specification. (Endorsed by AENOR in November of 2003.)
Integrated Services Digital Network (ISDN); Primary rate User-Network Interface (UNI); Part 1: Layer 1 specification. (Endorsed by AENOR in November of 2003.)
