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  2. Payphone - Wikipedia

    en.wikipedia.org/wiki/Payphone

    Payphone. A payphone (alternative spelling: pay phone or pay telephone or public phone) is typically a coin-operated public telephone, often located in a telephone booth or in high-traffic public areas. Prepayment is required by inserting coins or telephone tokens, swiping a credit or debit card, or using a telephone card .

  3. Telephone booth - Wikipedia

    en.wikipedia.org/wiki/Telephone_booth

    Telephone booth. A telephone booth, telephone kiosk, telephone call box, telephone box or public call box[ 1][ 2] is a tiny structure furnished with a payphone and designed for a telephone user's convenience; usually the user steps into the booth and closes the booth door while using the payphone inside.

  4. Red box (phreaking) - Wikipedia

    en.wikipedia.org/wiki/Red_box_(phreaking)

    A red box is a phreaking device that generates tones to simulate inserting coins in pay phones, thus fooling the system into completing free calls. In the United States, a nickel is represented by one tone, a dime by two, and a quarter by a set of five. Any device capable of playing back recorded sounds can potentially be used as a red box.

  5. The decline of pay phones in every state - AOL

    www.aol.com/decline-pay-phones-every-state...

    - Number of pay phones remaining in 2016: 188 (6.3 phones per 100K people) --- Down from 16,201 in 2000 (568.8 phones per 100K people) Story editing by Alizah Salario.

  6. Surprising number of US pay phones are still in use - AOL

    www.aol.com/finance/2018-03-20-surprising-number...

    And in 2015, pay phone providers reported $286 million dollars in revenue, according to the FCC. CNN Money reports pay phones can still be profitable in places where there isn’t cell phone or ...

  7. Phreaking - Wikipedia

    en.wikipedia.org/wiki/Phreaking

    Phreaking is a slang term coined to describe the activity of a culture of people who study, experiment with, or explore telecommunication systems, such as equipment and systems connected to public telephone networks. [ 1 ] The term phreak is a sensational spelling of the word freak with the ph- from phone, and may also refer to the use of ...

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