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  2. List of VoIP companies - Wikipedia

    en.wikipedia.org/wiki/List_of_VoIP_companies

    DSL, ISDN, Wireless, and VoIP products for communications devices BigAir: Sydney: Australia: DSL services and Australia's National Broadband Network CallFire: Santa Monica: United States: Web-based VoIP Comwave: Toronto: Canada: Web and Mobile applications, VoIP telephone service, broadband internet providers, and commercial telecommunication ...

  3. 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.

  4. Least-cost routing - Wikipedia

    en.wikipedia.org/wiki/Least-cost_routing

    In voice telecommunications, least-cost routing (LCR) is the process of selecting the path of outbound communications traffic based on cost.Within a telecoms carrier, an LCR team might periodically (monthly, weekly or even daily) choose between routes from several or even hundreds of carriers.

  5. Category:VoIP companies of the United States - Wikipedia

    en.wikipedia.org/wiki/Category:VoIP_companies_of...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  6. Internet telephony service provider - Wikipedia

    en.wikipedia.org/wiki/Internet_telephony_service...

    An Internet telephony service provider (ITSP) offers digital telecommunications services based on Voice over Internet Protocol (VoIP) that are provisioned via the Internet. ITSPs provide services to end-users directly or as whole-sale suppliers to other ITSPs.

  7. Voice over IP - Wikipedia

    en.wikipedia.org/wiki/Voice_over_IP

    The VoIP E911 emergency-calling system associates a physical address with the calling party's telephone number. All VoIP providers that provide access to the public switched telephone network are required to implement E911, a service for which the subscriber may be charged. "VoIP providers may not allow customers to opt-out of 911 service."

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