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  2. Xfinity - Wikipedia

    en.wikipedia.org/wiki/Xfinity

    Xfinity Voice (formerly Comcast Digital Voice) is a Voice Over IP cable telephony service that was launched in 2005 in some markets, [75] and to all of Comcast's markets in 2006. Comcast's older service, Comcast Digital Phone, continued to offer service for a brief period, until Comcast shut it down around in late 2007. [76]

  3. Coverage map - Wikipedia

    en.wikipedia.org/wiki/Coverage_map

    Typically a coverage map will indicate the area within which the user can expect to obtain good reception of the service in question using standard equipment under normal operating conditions. Additionally, the map may also separately denote supplementary service areas where good reception may be obtained but other stations may be stronger, or ...

  4. 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.

  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. Cellular frequencies in the United States - Wikipedia

    en.wikipedia.org/wiki/Cellular_frequencies_in...

    The B block of spectrum was awarded to a local wireline carrier that provided landline telephone service in the CMA. The A block was awarded to non-wireline carriers. In 1986, the FCC allocated an additional 5 MHz of spectrum for each channel block, raising the total amount of spectrum per block to the current total of 25 MHz. [ 3 ]

  7. Coverage (telecommunication) - Wikipedia

    en.wikipedia.org/wiki/Coverage_(telecommunication)

    Broadcasters and telecommunications companies frequently produce coverage maps to indicate to users the station's intended service area. Coverage depends on several factors, such as orography (i.e. mountains) and buildings, technology, radio frequency and perhaps most importantly for two-way telecommunications the sensitivity and transmit ...

  8. Comcast - Wikipedia

    en.wikipedia.org/wiki/Comcast

    Brian L. Roberts. Comcast is described as a family business. [19] Brian L. Roberts, its chairman and CEO, is the son of founder Ralph J. Roberts (1920–2015). Roberts owns or controls about 1% of all Comcast shares but all of the Class B supervoting shares, giving him an "undilutable 33% voting power over the company". [20]

  9. Opensignal - Wikipedia

    en.wikipedia.org/wiki/Opensignal

    Opensignal NetworkRank is an in-app service comparing the performance of different cellular carriers in particular regions. The service is a part of their carrier maps, which are colour-coded to show areas of strong and weak cell phone signal. The information used is provided by users of the Opensignal application. [5]

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