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History of Touch-Tone Telephones

Touch-tone dialing with a push-button keypad was first introduced in two towns outside of Pittsburgh on November 18, 1963. Each number had its own frequency and was decoded by a switching center to connect a call. It would be about two decades before push-button phones would catch on and become standard in households across America.

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"My first conscious memory was sitting off to the side of the stage as a two-year-old…watching ... more
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