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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. AT&T Communications - Wikipedia

    en.wikipedia.org/wiki/AT&T_Communications

    AT&T Phone (formerly AT&T U-verse Voice) is a voice communication service delivered over AT&T's IP network . This phone service is digital and provides a voicemail service accessed by *98 from the home number. Customers who subscribe to both AT&T Phone and U-verse TV get features such as call history on channel 9900, which displays the last 100 ...

  4. 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 three major cellular carriers in the countryv—AT&T Mobility, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.

  5. Business Owner Gets $216,464 AT&T Bill - for Phone That Never ...

    www.aol.com/on/216464-att-bill-hacked-voip-phone...

    dishekie/reddit A business owner was already a little miffed at AT&T when the phone line it installed didn't work. So imagine how upset he was when the company sent him a bill for $216,464.75.

  6. Talk:AT&T CallVantage - Wikipedia

    en.wikipedia.org/wiki/Talk:AT&T_CallVantage

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

  7. 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.

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