As Wi-Fi calls come to smartphones, networks get ready to carry them - PCWorld
 

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As Wi-Fi calls come to smartphones, networks get ready to carry them
PCWorld
Wi-Fi may carry many voice calls within the next few years, but the technology required to make those calls is still young in some ways. Mobile subscribers have been talking and doing video chats over Wi-Fi for a long time using Internet-based services ...

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Courtesy of WestNet City Wi-Fi
www.westnet.ca