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Definition of Touch-tone dialing
1. Noun. (American English) A system of telephone dialing in which each digit is transmitted as a tone or combination of tones of specific pitch. ¹
¹ Source: wiktionary.com
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1. Noun. (American English) A system of telephone dialing in which each digit is transmitted as a tone or combination of tones of specific pitch. ¹
¹ Source: wiktionary.com