Dual-Tone Multi-Frequency (DTMF) - Definition or Meaning

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Dual-Tone Multi-Frequency (DTMF)

Author:

Marc Ferguson

Published:

15/05/2024

Updated:

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Definition of “Dual-Tone Multi-Frequency (DTMF)” :

“Dual-Tone Multi-Frequency (DTMF)” is a signaling system used in telecommunications. It combines two different sound frequencies to represent a phone number or other data. It’s the system that allows you to interact with automated systems over the phone, like when you dial numbers to navigate through a menu.

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