NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
Standards
[CURRENT]
DIN ETS 300532
DIN ETS 300532
European digital cellular telecommunications system (Phase 2) - Support of Dual Tone Multi-Frequency signalling (DTMF) via the GSM system; English version ETS 300532:1994
Title (German)
Europäisches zellulares digitales Funkkommunikationssystem (Phase 2) - Dualton-Multifrequenz-Signalisierung (DTMF) über das GSM-System; Englische Fassung ETS 300532:1994