tone dialing
noun
a system of calling telephone numbers wherein tones of differing pitch corresponding to the digits in the number called are electronically generated by manipulating pushbuttons (contrasted with pulse dialing).
OTHER WORDS FROM tone dialing
tone-di·al·ing, adjectiveWords nearby tone dialing
tone arm,
tone cluster,
tone color,
tone colour,
tone control,
tone dialing,
tone down,
tone language,
tone painting,
tone poem,
tone policing