ETSI TS 100 517

ETSI TS 100 517
ETSI TS 100 517 English PDF Digital cellular telecommunications system (Phase 2+) (GSM); MultiParty (MPTY) Supplementary Services - Stage 1 (GSM 02.84 version 7.0.0 Release 1998)

standard published 08/01/1999 by European Telecommunications Standards Institute

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