ETSI ETS 300 933
ETSI ETS 300 933
Digital cellular telecommunications system (Phase 2 ) (GSM); Voice Group Call Service (VGCS); Stage 2 (GSM 03.68 version 5.5.1) Edition: 5European Telecommunications Standards Institute / 01-Dec-1998 / 68 pages
SUBJECT Update of 03.68 to cover inter-MSC Voice group calls