ETSI TS 123 084
ETSI TS 123 084
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Multi Party (MPTY) supplementary services - Stage 2 (3GPP TS 23.084 version 4.0.0 Release 4)
standard published 03/01/2001 by European Telecommunications Standards Institute
