dual-tone multi-frequency.

listen to the pronunciation of dual-tone multi-frequency.
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Определение dual-tone multi-frequency. в Английский Язык Английский Язык словарь

dual-tone multi-frequency.
DTMF
Dual Tone Multi Frequency
allocation of a unique tone to each button on an appliance (made up of two frequencies - high and low) that allows a computer to recognize the tone (DTMF)
Dual Tone Multi Frequency
dtmf
dual-tone multi-frequency.
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