DefinePK

Abstract

Voice over Internet Protocol is a category of hardware and software that enables people to use the Internet as the transmission medium for telephone calls by sending voice data in packets using IP rather than by traditional circuit transmissions of the PSTN. The transmission of real time voice data is not as easy as ordinary text data and the real time voice transmission faces lot of difficulties. It suffers from packet loss, delay, quality and security. One prominent advantage of VoIP is that the telephone calls over the Internet do not incur a surcharge beyond what the user is paying for Internet access, much in the same way that the user doesn't pay for sending individual messages over the Internet. VoIP provides a protected transmission of private voice data between two endpoints. In those settings in VoIP, the participants between secret sharing scheme into a variety of levels. The hierarchical secret sharing is one of the best schemes in VoIP because it is more easy and simple to compute and implement in the real-life. An analysis of the signaling process and a study of simulation results have shown the advanced security enhancements in VoIP.