Integrated Services Digital Network (ISDN);Signalling System No.7;Transaction Capabilities (TC) version 2;Part 1: Protocol specification [ITU-T Recommendations Q.771 to Q.775 (1993), modified] (Endorsed by Asociación Espanola de Normalización in May of 2022.)
NORMA vydána dne 1.5.2022
Designation standards: UNE-ETS 300287-1ED2
Publication date standards: 1.5.2022
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE