“ SURVIVE WITH COMMUNICATION”, these words   represent   the necessity of communication in day-to-day life. Here voice over IP represents the voice over internet protocol which we can simply say it as INTERNET TELEPHONY. It refers to communication services-voices, facsimile, and/or voice messaging applications that are transported via internet ,rather than  the public switched telephone network(PSTN). The basic steps involved in originating an internet telephone call are conversion of the analog voice signal to digital format and compression/translation of the signal into internet protocol (IP) packets for transmission over the internet ; the process is reversed at the receiving end. The information that is transmitted over the internet is broken into independent packets. since the information  stream is divided into packets, each may follow its own path through the network thereby avoiding parts of the network that  have been blown up or otherwise incapacitated. This is done by packet switching network.

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