Voice over IP is often referred to as IP telephony or Internet telephony. It is a technological system that, in contrast to the conventional ISDN variant, uses IP connections to connect to broadband. This paves the way for voice communication via the Internet. "IP" stands for Internet Protocol – the network protocol that forms the basis for connections made via the Internet. Each Internet-enabled device has its own IP address. Data can be sent back and forth between end devices via this IP address. http://www.forumvoip.com/viewforum.php?f=14

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