Integrated Services Digital Network (ISDN);Signalling System No.7;ISDN User Part (ISUP) version 2 for the international interface;Part 1: Basic services [ITU-T Recommendations Q.761 to Q.764 (1993), modified] (Endorsed by Asociación Espanola de Normalización in June of 2022.)
NORMA vydána dne 1.6.2022
Designation standards: UNE-ETS 300356-1ED1
Publication date standards: 1.6.2022
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE