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]
STANDARD published on 18.7.2001
Designation standards: ETSI EN 300356-1-V4.2.1
Publication date standards: 18.7.2001
The number of pages: 43
Approximate weight : 129 g (0.28 lbs)
Country: European technical standard
Category: Technical standards ETSI