A SECURITY ANALYSIS IN VoIP USING HIERARCHICAL THRESHOLD SECRET SHARING

-------------------------------------------------------------------ABSTRACT---------------------------------------------------Voice over Internet Protocol (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. VoIP provides a protected transmission of private voice data between two endpoints. A tremendous change in telecommunication industry is Voice over Internet Protocol (VoIP). VoIP presents interactive communications. It varies from conventional circuit switched networks. Voice over IP permits people to communicate with each other at lower cost. The transmission of Real time voice data is not simple as ordinary text data. The real time voice transmission faces lot of difficulties. It suffers from packet loss, delay, security and quality. These factors will affect the communication, degrades the performance and quality of a VoIP. In VoIP using a collection of hierarchical structure causes the threshold secret sharing tribulations. In those settings, the participants between in secret sharing scheme into a variety of levels. This paper addresses the security aspects of VoIP to improve the quality using hierarchical threshold secret sharing.