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  2. List of multiple-system operators - Wikipedia

    en.wikipedia.org/wiki/List_of_multiple-system...

    A multiple-system operator (MSO) is an operator of multiple cable or direct-broadcast satellite television systems. A cable system in the United States, by Federal Communications Commission (FCC) definition, is a facility serving a single community or a distinct governmental entity, each of which has its own franchise agreement with the cable company.

  3. Mobile network codes in ITU region 3xx (North America)

    en.wikipedia.org/wiki/Mobile_network_codes_in...

    US MCC; UMTS shut down July 2022 [110] 310: 280: AT&T: AT&T Mobility: Not operational: GSM 1900: Former Centennial Puerto Rico; US MCC [85] [14] 313: 510: Puerto Rico Telecom Company: Unknown: Unknown: Uses US MCC [111] [112] 313: 790: Liberty: Liberty Cablevision of Puerto Rico LLC: Operational: LTE 700 / LTE 850 / LTE 1700 / LTE 1900 / LTE ...

  4. 10-10-321 - Wikipedia

    en.wikipedia.org/wiki/10-10-321

    10-10-321, 10-10-345, 10-10-220, and 10-10-987 are United States long-distance phone services best known for their prolific television and direct mail advertising in the late 1990s. 10-10-321 was the first mass-marketed service of its type. 10-10-345 was owned by AT&T, and the rest were all owned by MCI, which is now part of Verizon.

  5. List of mobile network operators in the United States

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

    This is a list of mobile network operators (MNOs) in the United States. The Cellular Telecommunications & Internet Association (CTIA), lists approximately 30 facilities-based wireless service providers in the United States as members. Competitive Carriers Association (CCA) has over 100 members. [1]

  6. PSTN network topology - Wikipedia

    en.wikipedia.org/wiki/PSTN_network_topology

    PSTN network topology is the switching network topology of a telephone network connected to the public switched telephone network (PSTN).. In the United States and Canada, the Bell System network topology was the switching system hierarchy implemented and operated from c. 1930 to the 1980s for the purpose of integrating the diverse array of local telephone companies and telephone numbering ...

  7. CNCP Telecommunications - Wikipedia

    en.wikipedia.org/wiki/CNCP_Telecommunications

    The next year, CNCP and TCTS (Trans Canada Telephone System, later Telecom Canada) published a brief, stating that they could work together in financing a Canadian telecommunications satellite so long as the federal government also had a stake in the project. [1] TelePost was a joint venture between CNCP and Canada Post that began in 1973.

  8. List of mobile network operators in Canada - Wikipedia

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

    As of March 2021, there are over 33 million wireless subscriptions in Canada. [1] Approximately 90% of Canadian mobile phone users subscribe to one of the four largest national telecommunication companies (Rogers Wireless, Telus Mobility, Bell Mobility and Freedom Mobile) or one of their subsidiary brands.

  9. List of mobile virtual network operators in the United States ...

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.