Glossary:Dual-tone multi-frequency signaling (DTMF)

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Dual Tone Multi Frequency, dual tone multi frequency, DTMF
Touchtone dialing. In DTMF, pushing a button sends a combination of two tones: one high-frequency tone and one low-frequency tone.



Touchtone dialing. In DTMF, pushing a button sends a combination of two tones: one high-frequency tone and one low-frequency tone.

Touchtone dialing. In DTMF, pushing a button sends a combination of two tones: one high-frequency tone and one low-frequency tone.

Touchtone dialing. In DTMF, pushing a button sends a combination of two tones: one high-frequency tone and one low-frequency tone.

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