https://www.genesys.com/definitions/what-is-dual-tone-multi-frequency-dtmf
What is Dual Tone Multi-frequency (DTMF)? | Genesys
What is Dual Tone Multi-frequency (DTMF)?
dual tone multi frequencywhat isdtmfgenesys
https://www.nextiva.com/voip-definitions/dtmf-tones.html
What are DTMF Tones (Dual Tone Multi-Frequency)? | Nextiva
Nextiva's VoIP glossary is full of quick definitions for the stickiest terms in VoIP. Learn more about DTMF Tones inside.
dual tone multi frequencydtmftonesnextiva