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  2. Category:AT&T subsidiaries - Wikipedia

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

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  3. Local number portability - Wikipedia

    en.wikipedia.org/wiki/Local_number_portability

    Local number portability (LNP) for fixed lines, and full mobile number portability (FMNP) for mobile phone lines, refers to the ability of a "customer of record" of an existing fixed-line or mobile telephone number assigned by a local exchange carrier (LEC) to reassign the number to another carrier ("service provider portability"), move it to another location ("geographic portability"), or ...

  4. Bell System Practices - Wikipedia

    en.wikipedia.org/wiki/Bell_System_Practices

    A typical volume of Bell System Practices from the 1970s. The Bell System Practices (BSPs) is a compilation of technical publications which describes the best methods of engineering, constructing, installing, and maintaining the telephone plant of the Bell System under direction of AT&T and Bell Telephone Laboratories. [1]

  5. Mobile number portability - Wikipedia

    en.wikipedia.org/wiki/Mobile_number_portability

    Similarly, after porting to a new provider the number would be locked in for 90 days. Number Portability Clearinghouse service is handled by iconectiv. The duration for the process is 3 days and the time a number is deactivated for portability is about 2 hours. [32] [33] [34] Japan: 2006.10.24 1 JPY 3000 [35] [36] Malaysia: 2008.10.01 1 Free

  6. List of mobile network operators in the United States

    en.wikipedia.org/wiki/List_of_mobile_network...

    Acquired by Verizon Wireless and AT&T Mobility. [39] AT&T Wireless Services: GSM: EDGE: 22: October 2004: Acquired by Cingular Wireless, which later rebranded to AT&T Mobility. [40] Big Sky Mobile: GSM: EDGE: Unknown: 2017: Sold spectrum licenses to AT&T and T-Mobile and exited the business. [41] Blaze Wireless: GSM, UMTS: EDGE, HSPA+, LTE ...

  7. US Cellular to sell some spectrum licenses to AT&T for ... - AOL

    www.aol.com/news/us-cellular-sell-spectrum...

    The transaction is part of the regional wireless carrier's strategy to monetize its spectrum assets that were not part of the previously announced sale to T-Mobile. In May, U.S. Cellular entered ...

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