Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 4 for the international interface; Part 2: ISDN supplementary service [ITU-T Recommendation Q.730 (1999) modified]
STANDARD published on 18.7.2001
Designation standards: ETSI EN 300356-2-V4.1.2
Publication date standards: 18.7.2001
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: European technical standard
Category: Technical standards ETSI