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Scalable VoIP Mobility by Joseph Epstein

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5.1. The Advantages of Wi-Fi
Until now, we’ve looked at why voice is interesting and what makes it work over a network, but we haven't yet examined the technologies that truly make voice mobile. The advantage of mobile voice, when working properly, is that the elements of the underlying network fade away, and user sees only a familiar phone, in a mobile package. Of course, this requires cutting the cord, allowing users to make or receive calls from anywhere. So that we can understand how and why an unwired network is able to make the elements of the network disappear to the user, so to speak, we need to dive deeper and understand what the unwired network is made of.
Wi-Fi, the wireless local area networking technology based on the work from the ...

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