Introduction
In the first generation of web-based video calling, families could stay in touch (e.g. Skype), while companies could conduct business meetings over several locations (e.g. Polycom, Cisco Telepresence, etc.). Mobile-based video calling options dramatically changes things. iPhone users can now call one another via the pre-installed Facetime app, as long as both parties are connected to a WiFi network. With Skype app (iPhone, Android and Symbian), Skype users can video-call one another from their smarthphone over WiFi or 3G. Let's consider a few use cases to demonstrate how mobile video changes things.
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