touch-tone dialing

Noun

Meaning

touch-tone dialing (uncountable)

(US, telephony) A system of telephone dialing in which each digit is transmitted as a tone or combination of tones of specific pitch.

Source: en.wiktionary.org

Synonyms

dual tone multi-frequency

Close letter words and terms

touch-needle touch-paper touch-tone touch-tone dialling touch-type touch-typist