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  2. Franklin Center (Chicago) - Wikipedia

    en.wikipedia.org/wiki/Franklin_Center_(Chicago)

    The Franklin Center is a 60-story supertall skyscraper in the Loop neighborhood of downtown Chicago.Completed in 1989 as the AT&T Corporate Center to consolidate the central region headquarters of the American Telephone & Telegraph Company (AT&T), [2] it stands at a height of 1,007 ft (307 m) and contains 1.7 million sq ft (160,000 m 2) of floor space. [3]

  3. AT&T Switching Center - Wikipedia

    en.wikipedia.org/wiki/AT&T_Switching_Center

    The AT&T Madison Complex Tandem Office is a 17-story, 79 m (259 ft) building in Los Angeles, California, completed in 1961.With its microwave tower, used through 1993, bringing the overall height to 137 m (449 ft), it is the 29th tallest building in Los Angeles.

  4. Category:AT&T buildings - Wikipedia

    en.wikipedia.org/wiki/Category:AT&T_buildings

    Pages in category "AT&T buildings" The following 48 pages are in this category, out of 48 total. ... Detroit–Columbia Central Office Building; E. Europe India Gateway;

  5. 33 Thomas Street - Wikipedia

    en.wikipedia.org/wiki/33_Thomas_Street

    33 Thomas Street (formerly the AT&T Long Lines Building) is a 550-foot-tall (170 m) windowless skyscraper in the Tribeca neighborhood of Lower Manhattan in New York City, New York, United States. It stands on the east side of Church Street , between Thomas Street and Worth Street .

  6. 811 Tenth Avenue - Wikipedia

    en.wikipedia.org/wiki/811_Tenth_Avenue

    811 Tenth Avenue (also called the AT&T Switching Center) is a 370-foot-tall (110 m) skyscraper in the Hell's Kitchen neighborhood of Manhattan in New York City. [1] It was designed by Kahn & Jacobs and completed in 1964, occupying the full block of 10th Avenue 's western side between West 53rd and 54th Streets .

  7. AT&T Michigan Headquarters - Wikipedia

    en.wikipedia.org/wiki/AT&T_Michigan_Headquarters

    The AT&T Building (formerly known as the SBC Building, the Ameritech Building and the Michigan Bell Building) was completed for the Michigan Bell Telephone Company in 1919 [1] and expanded in 1928. It is located at 1365 Cass Avenue, and occupies the block bordered by First Street, Cass Avenue, State Street, and Michigan Avenue .

  8. Telephone exchange - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange

    A telephone operator manually connecting calls with cord pairs at a telephone switchboard A modern central office, equipped with voice communication and broadband data capabilities A telephone exchange , also known as a telephone switch or central office , is a crucial component in the public switched telephone network (PSTN) or large ...

  9. AT&T City Center - Wikipedia

    en.wikipedia.org/wiki/AT&T_City_Center

    The AT&T City Center is a 30-story, 390 foot (119 m) office building in Birmingham, Alabama. Completed in 1972, the building was originally known as the South Central Bell Building and was the corporate headquarters for South Central Bell and its five-state operating territory.