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Video: What is DTMF? – Dual Tone Multi-Frequency

Today we’re going to be talking about DTMF.


What Are DTMF Tones?

To cover off the technical piece first, DTMF stands for Dual Tone Modulated Frequency. Essentially the numbers on your telephone, be it analogue or mobile have a tone associated with the number, we can pick them up and use it for transfer of data.


To find out how DTMF suppression can benefit your business please contact us. Call +44 (0) 1302 513 000 or email

Presented by Mark Kelly – Chief Commercial Officer (CCO) at Key IVR


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