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  2. IP PBX - Wikipedia

    en.wikipedia.org/wiki/IP_PBX

    An IP PBX is a PBX system with IP connectivity and may provide additional audio, video, or instant messaging communication utilizing the TCP/IP protocol stack. Voice over IP (VoIP) gateways can be combined with traditional PBX functionality to allow businesses to use their managed intranet to help reduce long distance expenses and take ...

  3. Business telephone system - Wikipedia

    en.wikipedia.org/wiki/Business_telephone_system

    This means the customer does not need to buy or install PBX equipment. Generally, the service is provided by a lease agreement and the provider can, in some configurations, use the same switching equipment to service multiple hosted PBX customers. The first hosted PBX services were feature-rich compared to most premises-based systems of the ...

  4. PBX - Wikipedia

    en.wikipedia.org/wiki/PBX

    PBX may refer to: . Pakubuwono X, the tenth Susuhunan of Surakarta in Java, Indonesia; Polymer-bonded explosive; Pre-B-cell leukemia homeobox; Private branch exchange, a telephone exchange that serves a particular business or office

  5. Telephone exchange - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange

    For corporate or enterprise applications, a private telephone exchange is termed a private branch exchange (PBX), which connects to the public switched telephone network. A PBX serves an organization's telephones and any private leased line circuits, typically situated in large office spaces or organizational campuses.

  6. The Benefits of VoIP Phone Systems - AOL

    www.aol.com/benefits-voip-phone-systems...

    Over 30% of U.S. companies use Voice over Internet Protocol (VoIP) phone systems. Many switch from conventional services to realize the benefits of VoIP, including lower costs, operational ...

  7. Direct inward dial - Wikipedia

    en.wikipedia.org/wiki/Direct_inward_dial

    The PBX may use this information to route the call directly to a telephone extension within the organization without the need for an operator or attendant. The service provides inbound telephone service for many telephone numbers, often requiring far fewer physical telecommunication circuits to satisfy the demand for concurrent usage than the ...