Dual Tone Multi Frequency

Dual Tone Multi Frequency

(communications)
(DTMF, or "touch-tone") A method used by the telephone system to communicate the keys pressed when dialling. Pressing a key on the phone's keypad generates two simultaneous tones, one for the row and one for the column. These are decoded by the exchange to determine which key was pressed.
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Tenders are invited for Supply Of 4 Wire / 2 Wire Train Traffic Control Equipment Dual Tone Multi Frequency Dtmf Signalling As Per Rdso Specification No.
Audio and video greetings, ring back tones, and announcements - Audio and video recording and playback - Audio and video conference mixing, up to HD 720p - Audio and video transcoding - Voice Quality Enhancements (VQE) - Dual Tone Multi Frequency (DTMF) - Multi-Language IVR (>45 languages) - Audio/video forking and tapping for lawful intercept - Active/standby MRF support
Workgroup also incorporates remote notification, talking e-mail and personal assistant with Find Me/Follow Me Call Forwarding and Automatic Speech Recognition (ASR) with Dual Tone Multi Frequency (DTMF) fall back for finding contacts and placing calls.
TDK's modem chip features the full AT command set and dual tone multi frequency (DTMF) tone generation and detection.
The currently utilized MassDOT OneVoice allows callers to interact with the Registry of Motor Vehicles (RMV) using Speech or Dual Tone Multi Frequency (DTMF) commands.
In addition Dual Tone Multi Frequency is also supported in order to support touch-tone services used by computer telephony systems.
Hunt explained that the 2959 supports existing VSELP and the new ACELP vocoder testing, digital transmitter modulation IQ analysis, handset Dual Tone Multi Frequency (DTMF) signaling and TDMA time-slot change measurements to ensure accurate TDMA handset checks.
For telecommunications applications, an optional G-165 network echo canceller and Dual Tone Multi Frequency (DTMF) support are included on the chip.

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