Integrated Services Digital Network (ISDN);Signalling System No.7;Signalling interworking specification for ISDN User Part (ISUP) version 1 (Endorsed by Asociación Espanola de Normalización in June of 2022.)
NORM herausgegeben am 1.6.2022
Designation standards: UNE-ETS 300343ED1
Publication date standards: 1.6.2022
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE