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  2. 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 three major cellular carriers in the country, AT&T Mobility, T-Mobile US, and Verizon. [ 1 ] [ 2 ] In 2016, MVNOs across the nation such as Metro PCS , Boost Mobile , Cricket Wireless , and TracFone brands served about 36 million ...

  3. Business telephone system - Wikipedia

    en.wikipedia.org/wiki/Business_telephone_system

    A business telephone system is a telephone system typically used in business environments, encompassing the range of technology from the key telephone system ( KTS) to the private branch exchange ( PBX ). A business telephone system differs from an installation of several telephones with multiple central office (CO) lines in that the CO lines ...

  4. Telephone exchange - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange

    A telephone exchange, also known as a telephone switch or central office, is a crucial component in the public switched telephone network (PSTN) or large enterprise telecommunications systems. It facilitates the interconnection of telephone subscriber lines or digital system virtual circuits, enabling telephone calls between subscribers.

  5. Unified communications - Wikipedia

    en.wikipedia.org/wiki/Unified_communications

    Unified communications is an evolving set of technologies that automates and unifies human and device communications in a common context and experience. It optimizes business processes and enhances human communications by reducing latency, managing flows, and eliminating device and media dependencies. A UC system may include features such as ...

  6. Telephony - Wikipedia

    en.wikipedia.org/wiki/Telephony

    Telephony ( / təˈlɛfəni / tə-LEF-ə-nee) is the field of technology involving the development, application, and deployment of telecommunication services for the purpose of electronic transmission of voice, fax, or data, between distant parties. The history of telephony is intimately linked to the invention and development of the telephone .

  7. Virtual office - Wikipedia

    en.wikipedia.org/wiki/Virtual_office

    A virtual office is part of the flexible workspace industry that provides businesses with any combination of services, space and/or technology, without those businesses bearing the capital expenses of owning or leasing a traditional office. A virtual office can be used by entrepreneurs, freelancers, and small businesses that do not need or ...

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