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Operator, I need an exit. Fast. | 11:57 am | 29 November 2004

Understanding telephones.

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no comments on “Operator, I need an exit. Fast.”

  1. jima
    November 29th, 2004 at 12:48 pm

    The DTMF pad and frequencies diagram at the end of the article brings back fond memories of writing a command-line utility for the Amiga which would generate the mythical “Red Box” tones, which would allow you to get free phone calls from a pay phone. I never used it for that purpose, of course.

  2. Miriam
    November 29th, 2004 at 5:00 pm

    OOOH you are l337! But I knew that.

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