ETSI TS 122 093
ETSI TS 122 093
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Completion of Calls to Busy Subscriber (CCBS); Service description, Stage 1 (3G TS 22.093 version 3.0.1 Release 1999)
standard published 01/01/2000 by European Telecommunications Standards Institute
