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  2. Ameritech - Wikipedia

    en.wikipedia.org/wiki/Ameritech

    Ameritech. AT&T Teleholdings, Inc., formerly known as Ameritech Corporation (and before that American Information Technologies Corporation ), is an American telecommunications company that arose out of the 1984 AT&T divestiture. Ameritech was one of the seven Regional Bell Operating Companies that was created following the breakup of the Bell ...

  3. RespOrg - Wikipedia

    en.wikipedia.org/wiki/RespOrg

    A RespOrg, or responsible organization, is a company that maintains the registration for individual toll-free telephone numbers In the North American Numbering Plan by means of the distributed Service Management System/800 database. RespOrgs were established in 1993 as part of a Federal Communications Commission order instituting toll-free ...

  4. Number Portability Administration Center - Wikipedia

    en.wikipedia.org/wiki/Number_Portability...

    The Number Portability Administration Center ( NPAC) is a function of the Federal Communications Commission (FCC) in the United States. It administers the routing of telephone calls and text messages (SMS) for the telecommunications industry and its customers in the regions of the North American Numbering Plan. [1]

  5. Michigan Bell - Wikipedia

    en.wikipedia.org/wiki/Michigan_Bell

    Michigan Bell is the subsidiary of AT&T serving the state of Michigan. Following the Bell System divestiture on January 8, 1984, the company became a subsidiary of Ameritech, the Regional Bell operating company that served the midwestern United States. Ameritech was subsequently acquired by SBC Communications, which later changed its name to AT&T .

  6. File Transfer Protocol - Wikipedia

    en.wikipedia.org/wiki/File_Transfer_Protocol

    t. e. The File Transfer Protocol ( FTP) is a standard communication protocol used for the transfer of computer files from a server to a client on a computer network. FTP is built on a client–server model architecture using separate control and data connections between the client and the server. [1] FTP users may authenticate themselves with a ...

  7. Room 641A - Wikipedia

    en.wikipedia.org/wiki/Room_641A

    Nothing to hide argument. v. t. e. Room 641A is a telecommunication interception facility operated by AT&T for the U.S. National Security Agency, as part of its warrantless surveillance program as authorized by the Patriot Act. The facility commenced operations in 2003 and its purpose was publicly revealed in 2006.

  8. AT&T Communications - Wikipedia

    en.wikipedia.org/wiki/AT&T_Communications

    AT&T Cybersecurity. Website. www .att .com. AT&T Communications is a division of AT&T that focuses on mobile phone, broadband, fixed line telephone, home security, network security, and business services. The division houses AT&T Mobility, AT&T Internet, AT&T Phone, AT&T Long Distance, AT&T Labs, AT&T Digital Life, and AT&T Cybersecurity .

  9. Rate center - Wikipedia

    en.wikipedia.org/wiki/Rate_center

    a geographical place name (city, province/state) a nominal physical location (V and H co-ordinates) for distance calculations for billing purposes. one or more prefixes, in the form +1-NPA-NXX, which each identify a block of ten thousand directory numbers. a specified local calling area, identified as a list of other individual rate centers to ...

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