ÖNORM EN 300356-15 V 4.2.1:2001-11
Действует
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]
