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  2. Mobile telephony - Wikipedia

    en.wikipedia.org/wiki/Mobile_telephony

    5G ( 5.25G, 5.5G) 6G. Mobile telecommunications. v. t. e. Mobile telephony is the provision of telephone services to mobile phones rather than fixed-location phones ( landline phones ). Telephony is supposed to specifically point to a voice-only service or connection, though sometimes the line may blur.

  3. When Texas jails issue tablets, it comes at cost for inmates ...

    www.aol.com/texas-jails-issue-tablets-comes...

    Some states have made phone calls free. A new law, signed by President Joe Biden last year, expands federal authority to regulate the price of video calls and in-state calls. Those rates would ...

  4. 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 various ...

  5. Call blocking - Wikipedia

    en.wikipedia.org/wiki/Call_blocking

    Such devices and services enable the user to block a call as it is in progress or alternatively block the number after the call is made. These devices rely on caller ID information and thus a phone blocker requires a caller ID service active on the line for blocking to function. Treatment of blocked calls may include:

  6. History of the telephone - Wikipedia

    en.wikipedia.org/wiki/History_of_the_telephone

    1915: The first U.S. coast-to-coast long-distance telephone call, is ceremonially inaugurated by A.G. Bell in New York City and his former assistant Thomas Augustus Watson in San Francisco, California. 1927: The first transatlantic phone call is made, from the United States to the United Kingdom. Early commercial instruments

  7. Red box (phreaking) - Wikipedia

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

    For the American political strategy, see Red-boxing. 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 ...

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