Voice over IP (VoIP) is transforming the telecommunication industry. It
offers multiple opportunities such as lower call fees, convergence of voice and
data networks, simplification of deployment, and greater integration with
multiple applications that offer enhanced multimedia functionality. However,
notwithstanding all these technological and economic opportunities, VoIP also
brings up new challenges. Among them, security is perhaps the most
compelling. Security for Voice over IP (VoIP) can be achieved in different
ways. In this project new encryption algorithm has been proposed and
implemented on IAX protocol with focusing on the performance for the secure
media session. But VoIP has a very special characteristic: it is “time critical”.
Time has a tremendous impact on this technology’s ability to performance, and
to transmit meaningful information as well. Consequently, security
considerations for VoIP must take additional steps to fulfill specific quality
demands.]1[
