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2. List of VoIP companies - Wikipedia

   en.wikipedia.org/wiki/List_of_VoIP_companies

   VoIP communications for small businesses, home and mobile Radvision: New Jersey: United States: Video conferencing and telepresence technologies RingCentral: Belmont, CA and London: United States and UK: Cloud-based telephone systems Sipgate: Düsseldorf: Germany: VoIP and mobile phone services sipservice: Winterthur: Switzerland: VoIP service ...

3. Category:VoIP companies - Wikipedia

   en.wikipedia.org/wiki/Category:VoIP_companies

   VoIP companies of the United States (3 C, 43 P) Pages in category "VoIP companies" The following 37 pages are in this category, out of 37 total.

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

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

   Pages in category "VoIP companies of the United States" The following 43 pages are in this category, out of 43 total. This list may not reflect recent changes.

5. 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 ...

6. List of telecommunications companies - Wikipedia

   en.wikipedia.org/wiki/List_of_telecommunications...

   Mobile phone; Mobile virtual network operator; List of sovereign states by number of broadband Internet subscriptions; List of countries by number of Internet users; List of countries by number of telephone lines in use; List of countries by smartphone penetration; List of multiple-system operators; Companies portal; Telephones portal

7. 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.