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18th November 1963, Press-button phone officially released.

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2021-11-18 09:51:13


18th November 1963, Press-button phone officially released.

        After more than three years of testing, BelSystems introduces dual-tone multi-frequency (DTMF) press-button phones the first time under the name Touch-Tone. It replaced the rotary phone at the time and later became the standard for telephone communication.