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| touchtone dialing (A form of dialing that uses multiple-tone signaling. The user hears a series of tones (beeps) when dialing); touchtone (A form of dialing that uses multiple-tone signaling. The user hears a series of tones (beeps) when dialing) | |||
| dual-tone multifrequency dialing; multi-frequency dialing; multifrequency dialing | |||
