ETSI TS 100 933

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ETSI TS 100 933 English PDF Digital cellular telecommunications system (Phase 2+) (GSM); Voice Group Call Service (VGCS); Stage 2 (GSM 03.68 version 7.1.0 Release 1998)

standard published 05/01/2000 by European Telecommunications Standards Institute

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April 2000 7.1.0Crs approved at TSGN#7 and SMG email approved before SMG#32 CR A016VGCS Signalling Flows CR A018 Data Flow for Fast Call Setup CR A021 Recommendation to use DTMF tones for VGCS talking subscriber downlink un-muting