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  2. Toll-free telephone numbers in the North American Numbering ...

    en.wikipedia.org/wiki/Toll-free_telephone...

    Contents. Toll-free telephone numbers in the North American Numbering Plan. Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, and 888. Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future. 811 is excluded because it is a special ...

  3. AT&T Communications (1984-2010) - Wikipedia

    en.wikipedia.org/wiki/AT&T_Communications_(1984...

    Parent. AT&T Corporation (1984–2005) AT&T Inc. (2005–2010) Website. www .att .com. AT&T Communications, Inc., doing business as AT&T Communications, was a division of the AT&T Corporation that, through 23 subsidiaries, provided interexchange carrier and long-distance telephone services.

  4. AT&T Communications - Wikipedia

    en.wikipedia.org/wiki/AT&T_Communications

    AT&T Phone. AT&T Phone (formerly AT&T U-verse Voice) is a voice communication service delivered over AT&T's IP network . This phone service is digital and provides a voicemail service accessed by *98 from the home number. Customers who subscribe to both AT&T Phone and U-verse TV get features such as call history on channel 9900, which displays ...

  5. AT&T Michigan Headquarters - Wikipedia

    en.wikipedia.org/wiki/AT&T_Michigan_Headquarters

    AT&T Michigan Headquarters. / 42.3325; -83.0536. The AT&T Michigan Headquarters is a complex of skyscrapers and buildings located at 1st Street, Cass Avenue, State Street, and Michigan Avenue in Downtown Detroit, Michigan. It contains the AT&T Building, the AT&T Building addition, the Maintenance Shop and is owned by communications giant AT&T .

  6. Bell Labs - Wikipedia

    en.wikipedia.org/wiki/Bell_Labs

    AT&T retained a small number of researchers who made up the staff of the newly created AT&T Labs. Lucy Sanders was the third woman to receive the Bell Labs Fellow award in 1996, for her work in creating a RISC chip that allowed more phone calls using software and hardware on a single server. She started in 1977 and was one of the few woman ...

  7. History of AT&T - Wikipedia

    en.wikipedia.org/wiki/History_of_AT&T

    History of AT&T. The history of AT&T dates back to the invention of the telephone. The Bell Telephone Company was established in 1877 by Alexander Graham Bell, who obtained the first US patent for the telephone, and his father-in-law, Gardiner Greene Hubbard. Bell and Hubbard also established American Telephone and Telegraph Company in 1885 ...

  8. Toll-free telephone number - Wikipedia

    en.wikipedia.org/wiki/Toll-free_telephone_number

    A toll-free telephone number or freephone number is a telephone number that is billed for all arriving calls. For the calling party, a call to a toll-free number from a landline is free of charge. A toll-free number is identified by a dialing prefix similar to an area code. The specific service access varies by country.

  9. 411 (telephone number) - Wikipedia

    en.wikipedia.org/wiki/411_(telephone_number)

    411 (telephone number) 411 is a telephone number for local directory assistance in Canada and the United States. Until the early 1980s, 411 – and the related 113 number – were free to call in most jurisdictions. In the United States, the service is commonly known as "information", [1] although its official name is "directory assistance".

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