International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Secured voice communication plays a very important role in users day-to-day lives. Any voice communication is threatened by two biggest risks. One is, when someone is listening to their conversation behind their shoulder. The other main dangerous risk is someone listening to it over the wire at the time when it is getting transmitted .Hence there is emerging need to digitize voice data packets over SIP protocol using ZRTP as the encryption mechanism. Because of the advanced cryptographic techniques layered over robust protocols, this application makes VoIP calls, hard to intercept and decode thereby ensuring the integrity of the call .The commercial deployment of VoIP leads to the employment of security mechanisms that can assure availability, reliability, confidentiality and integrity.