Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 2 for the international interface; Part 9: Closed User Group (CUG) supplementary service [ITU-T Recommendation Q.735, clause 1 (1993), modified]
STANDARD published on 21.2.1995
Designation standards: ETSI ETS 300356-9-ed.1
Publication date standards: 21.2.1995
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: European technical standard
Category: Technical standards ETSI