Touch-Tone dialing system

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References

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AT&T Touch-Tone telephone

Evolution of the Phone

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Touch-Tone dialing system: Media

Images

AT&T Touch-Tone telephone

AT&T Touch-Tone telephone

AT&T Touch-Tone telephone, 1968.

Courtesy of AT&T Bell Laboratories/AT&T Archive

Interactives

Evolution of the Phone

Evolution of the Phone

A look at telephone technology through the decades.

Encyclopædia Britannica, Inc.