ETSI TS 101 283
ETSI TS 101 283
Digital cellular telecommunications system (Phase 2 ) (GSM); Technical realization of Completion of Calls to Busy Subscriber (CCBS); Stage 2 (GSM 03.93 version 7.0.0 Release 1998) Edition: 7.0.0European Telecommunications Standards Institute / 01-Aug-1999 / 163 pages