Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 4 for the international interface; Part 1: Basic services [ITU-T Recommendations Q.761 to Q.764 (1999) modified] (Endorsed by AENOR in February of 2004.)
NORM herausgegeben am 1.2.2004
Designation standards: UNE-EN 300356-1V4.2.1
Publication date standards: 1.2.2004
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategorie: Technische Normen UNE