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2. Comparison of VoIP software - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_VoIP_software

   This is a comparison of voice over IP (VoIP) software used to conduct telephone-like voice conversations across Internet Protocol (IP) based networks. For residential markets, voice over IP phone service is often cheaper than traditional public switched telephone network (PSTN) service and can remove geographic restrictions to telephone numbers, e.g., have a PSTN phone number in a New York ...

3. Voice over IP - Wikipedia

   en.wikipedia.org/wiki/Voice_over_IP

   Voice over Internet Protocol ( VoIP ), [ a ] also called IP telephony, is a method and group of technologies for voice calls for the delivery of voice communication sessions over Internet Protocol (IP) networks, [ 2 ] such as the Internet. The broader terms Internet telephony, broadband telephony, and broadband phone service specifically refer ...

4. List of telecommunications companies - Wikipedia

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

   Telecommunications company. ITU-T. Landline. List of mobile network operators. List of mobile network operators of the Americas. List of mobile network operators in Asia and Oceania. List of mobile network operators in Europe. List of mobile network operators in the Middle East and Africa. List of mobile network operators in Canada.

5. Comparison of cross-platform instant messaging clients

   en.wikipedia.org/wiki/Comparison_of_cross...

   Comparison of cross-platform instant messaging clients. The landscape for instant messaging involves cross-platform instant messaging clients that can handle one or multiple protocols. [1] Clients that use the same protocol can typically federate and talk to one another. The following table compares general and technical information for cross ...

6. List of VoIP companies - Wikipedia

   en.wikipedia.org/wiki/List_of_VoIP_companies

   United States and UK: Cloud-based telephone systems Sipgate: Düsseldorf: Germany: VoIP and mobile phone services sipservice: Winterthur: Switzerland: VoIP service provider TELES AG: Berlin: Germany: VoIP services VirtualPBX: San Jose, CA: United States: Cloud-based telephone systems VocalTec: West Palm Beach and Netanya: United States and ...

7. 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 48 pages are in this category, out of 48 total. This list may not reflect recent changes .