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  2. US West - Wikipedia

    en.wikipedia.org/wiki/US_West

    US West was a public company traded on the New York Stock Exchange under the ticker symbol "USW" with headquarters at 1801 California Street in Denver, Colorado. Until 1990, US West was a holding company with three Bell Operating Companies: Mountain States Telephone & Telegraph (or Mountain Bell, headquartered in Denver, Colorado); Northwestern ...

  3. Alltel - Wikipedia

    en.wikipedia.org/wiki/Alltel

    Alltel was a landline, wireless and general telecommunications services provider, primarily based in the United States. Before its wireless division was acquired by Verizon Wireless and AT&T, Alltel provided cellular service to 34 states and had approximately 13 million subscribers. As a regulatory condition of the acquisition by Verizon, a ...

  4. Orange Business - Wikipedia

    en.wikipedia.org/wiki/Orange_Business

    Orange Business. Orange Business, the business services arm of Orange S.A., is a global integrator of communications, products, and services for multinational corporations. [2] On 16th February 2023, Orange Business Services got renamed to Orange Business. [3] Orange Business offers integrated communications products and services to global ...

  5. AT&T CallVantage - Wikipedia

    en.wikipedia.org/wiki/AT&T_CallVantage

    AT&T CallVantage competed with other VoIP providers, such as Vonage. When AT&T U-verse Voice was unveiled January 28, 2008, AT&T continued to market CallVantage to customers without U-verse, particularly customers outside AT&T's local phone service territory. However, AT&T suspended new business later in 2008 "to evaluate CallVantage service."

  6. Cellular One - Wikipedia

    en.wikipedia.org/wiki/Cellular_One

    Cellular One. Cellular One is the trademarked brand name that licenses services (radio frequencies for telecommunications) used by several cellular service providers in the United States. The brand was sold to Trilogy Partners by AT&T in 2008 shortly after AT&T had completed its acquisition of Dobson Communications.

  7. Bell Labs - Wikipedia

    en.wikipedia.org/wiki/Bell_Labs

    Bell Labs is an American industrial research and scientific development company. Researchers from there are credited with the development of radio astronomy, the transistor, the laser, the photovoltaic cell, the charge-coupled device (CCD), information theory, the Unix operating system, and the programming languages B, C, C++, S, SNOBOL, AWK, AMPL, and others.

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