ETSI TS 123 014

ETSI TS 123 014
ETSI TS 123 014 English PDF Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Support of Dual Tone Multi-Frequency (DTMF) signalling (3G TS 23.014 version 3.1.0 Release 1999)

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

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