tone dialing

noun

1. 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 (pulse dialing ).

Other Word Forms

• tone-dialing adjective

Example Sentences

The New York World’s Fair in 1964-65 demonstrated touch tone dialing, and I.B.M. built the first small computers for schools and business.

From New York Times