ETSI TS 123 085
ETSI TS 123 085
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Closed User Group (CUG) supplementary service - Stage 2 (3GPP TS 23.085 version 3.1.0 Release 1999)
standard published 10/01/2000 by European Telecommunications Standards Institute
