Integrated Services Digital Network (ISDN). Signalling System No.7 (SS7). ISDN User Part (ISUP) version 4 for the international interface. Part 12: Conference call, add-on (CONF) supplementary service [ITU- T Recommendation Q.734, clause 1 (1993) and implementors guide (1998) modified]
STANDARD published on 1.5.2002
Designation standards: STN EN 300356-12-V4.2.1
Classification mark: 870356
Catalog number: 20055
Publication date standards: 1.5.2002
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: Slovak technical standard
Category: Technical standards STN