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  2. History of the telephone - Wikipedia

    en.wikipedia.org/wiki/History_of_the_telephone

    VoIP is also used on private wireless networks which may or may not have a connection to the outside telephone network. Telecommunication of the 21st century has been dominated by the development of the smartphone. This is a combination of a hand-held computer, a cellular phone, a digital camera, and Internet access.

  3. Telephone number - Wikipedia

    en.wikipedia.org/wiki/Telephone_number

    A telephone number serves as an address for switching telephone calls using a system of destination code routing. [1] Telephone numbers are entered or dialed by a calling party on the originating telephone set, which transmits the sequence of digits in the process of signaling to a telephone exchange.

  4. Landline - Wikipedia

    en.wikipedia.org/wiki/Landline

    Retrieved 12 October 2019. A landline ( land line, land-line, main line, fixed-line, and wireline) is a telephone connection that uses metal wires from the owner's premises also referred to as: POTS, Twisted pair, telephone line or public switched telephone network (PSTN). Landline services are traditionally provided via an analogue copper wire ...

  5. Prodigy (online service) - Wikipedia

    en.wikipedia.org/wiki/Prodigy_(online_service)

    Prodigy Communications, L.P. Prodigy Communications Corporation was an online service from 1984 to 2001 that offered its subscribers access to a broad range of networked services. It was one of the major internet service providers of the 1990s. The company claimed it was the first consumer online service, citing its graphical user interface and ...

  6. AT&T - Wikipedia

    en.wikipedia.org/wiki/AT&T

    In March 2024, AT&T confirmed the 2021 leak of contact information for over 7.6 million current users, as well as 65 million former ones. The leaked records may contain "full name, email address, mailing address, phone number, social security number, date of birth, AT&T account number and passcode".

  7. Mobile phone - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone

    A mobile phone (or cellphone [a]) is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone ( landline phone ). The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which ...

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