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As the name implies, Voice over IP (VoIP), refers to calls that traverse networks using Internet Protocol (IP). This may mean that the calls are going over the Internet, or it may simply mean calls are traveling over privately managed data networks that are using IP to transport the calls from one location to the other. In this case, NetCall uses the Internet. The voice stream is broken down into packets, compressed, and sent toward its final destination by various routes depending on the most efficient paths given network congestion, etc. At the other end, the packets are reassembled, decompressed, and converted back into a voice stream by various hardware and software elements, depending on the nature of the call and its final destination, whether the call originated on a PC, a telephone, or a regular phone connected to an I – Box. For more information we recommend searching the internet for information.