ETSI - PRETS 300 380
Universal Personal Telecommunication (UPT); Access Devices Dual Tone Multi Frequency (DTMF) Sender for Acoustical Coupling to the Microphone of a Handset Telephone
active, Most Current
| Organization: | ETSI |
| Publication Date: | 1 January 1993 |
| Status: | active |
| Page Count: | 12 |
Document History
PRETS 300 380
January 1, 1993
Universal Personal Telecommunication (UPT); Access Devices Dual Tone Multi Frequency (DTMF) Sender for Acoustical Coupling to the Microphone of a Handset Telephone
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