ETSI TS 124 085
ETSI TS 124 085
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Closed User Group (CUG) supplementary service - Stage 3 (3G TS 24.085 version 3.0.0 Release 1999)
standard published 01/01/2000 by European Telecommunications Standards Institute
