Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 12: Conference Call, add-on (CONF) supplementary service [ITU-T Recommendation Q.734, clause 1 (1993), modified]
NORMA vydána dne 31.8.1998
Designation standards: ETSI EN 300356-12-V3.1.3
Publication date standards: 31.8.1998
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: European technical standard
Kategorie: Technické normy ETSI