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Chapter 16. Videoconferencing and Intern... > Internet Telephony: Talking One-to-O...

Internet Telephony: Talking One-to-One

A subset of videoconferencing (and of many videoconferencing programs) is Internet telephony. Internet telephony enables users to place phone calls directly from their PCs, over the Internet, either to other Internet users or to regular telephones. When you place a call over the Internet, you avoid paying some or all of the long-distance charges associated with normal phone calls.

How Voice Over Internet Works

Internet telephony is possible because of the Voice over Internet Protocol (VoIP) technology. VoIP breaks normal analog voice conversations into the type of digital data packets that are typical of other Internet data, and then routes those packets over the Internet from your PC to another PC, where the packets are reassembled into a voice stream.


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