ETSI TS 100 532

ETSI TS 100 532
ETSI TS 100 532 English PDF Digital cellular telecommunications system (Phase 2+) (GSM); Support of Dual Tone Multi-Frequency signalling (DTMF) via the GSM system (GSM 03.14 version 6.0.0 Release 1997)

standard published 03/01/1999 by European Telecommunications Standards Institute

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