ETSI EN 300 356-15
ETSI EN 300 356-15
Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 4 for the international interface; Part 15: Diversion supplementary service [ITU-T Recommendation Q.732, clauses 2 to 5 (1999) modified]
standard published 07/01/2001 by European Telecommunications Standards Institute
