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| Definition | : | Dual Tone Multi-Frequency |
| Category | : | Technology » Communication |
| Country/ Region |
: | Worldwide
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| Popularity | : |
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Dual Tone Multi-Frequency (DTMF), better known as touch-tone, is a system of signal tones used in telecommunications. It is used to dial telephone numbers or to issue commands to switching systems or related telephony equipment.
The full form of DTMF is Dual Tone Multi-Frequency