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2. AT&T CallVantage - Wikipedia

   en.wikipedia.org/wiki/AT&T_CallVantage

   AT&T CallVantage competed with other VoIP providers, such as Vonage. When AT&T U-verse Voice was unveiled January 28, 2008, AT&T continued to market CallVantage to customers without U-verse, particularly customers outside AT&T's local phone service territory. [2] However, AT&T suspended new business later in 2008 "to evaluate CallVantage service."

3. The Benefits of VoIP Phone Systems - AOL

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

   Many VoIP service providers offer home and business systems. Both solutions allow users to make and receive calls from any internet-connected device, including cell phones, computers, or VoIP phones.

4. List of VoIP companies - Wikipedia

   en.wikipedia.org/wiki/List_of_VoIP_companies

   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 Israel: Telecom equipment provider VoiceHost: London: United Kingdom: VoIP and DSL ...

5. Marian Croak - Wikipedia

   en.wikipedia.org/wiki/Marian_Croak

   Marian Rogers Croak is an American engineer known for her voice over IP (VoIP) related inventions. [1] Croak worked for three decades at Bell Labs and AT&T where she filed over 200 patents [2] and works at Google since 2014 where she is Vice President of Engineering, [3] [4] In 2022, she was inducted into the National Inventors Hall of Fame for her work with VoIP.

6. Why these VoIP services are the best for calling family and ...

   www.aol.com/why-voip-services-best-calling...

   Most VoIP services involve a subscription fee on a rolling basis, but they often end up saving you money in the long term by providing you with free or low-cost calls as part of a bundle deal ...

7. Sonic (ISP) - Wikipedia

   en.wikipedia.org/wiki/Sonic_(ISP)

   Sonic has some control of the line such as not enforcing transfer caps, but customers are on AT&T's IP space. VoIP connection defaults to G.729ab [22] and uses less than 50 Kbps. [23] FlexLink – midband Ethernet service offering symmetric speeds from 1.5 Mbit/s to 500 Mbit/s. AT&T DSL – ADSL service delivered over an AT&T voice line. This ...