European digital cellular telecommunications system (Phase 2);Support of Dual Tone Multi-Frequency signalling (DTMF) via the GSM system (GSM 03.14) (Endorsed by Asociación Española de Normalización in October of 2022.)
| AENOR | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Name | UNE-ETS 300532 Ed1 |
