Secure and Optimize VoIP Communication Using QoS Technologies and VPN

Abstract

The use of Voice over IP (VoIP), which enables two users connected to Internet to have a voice conversation, plays a vital role on the performance of an enterprise companies. In this research we have focused in the Virtual Private Network (VPN) environment and how to run voice application over it. The Voice Over Internet Protocol (VOIP) is as a combination of IP networks, voice applications and voice calls which being replaced by the old service conversation and created their evolution at the technical and conceptual framework of phone. This technology is an innovative form of phone that can dramatically increase performance and capacities of telephone service for businesses and individuals around the world. But voice qualities, security, Jitters, Echo, Data loss are the pertaining problems associated with VoIP. To overcome this limitation in this research, we used Simulation method in Cisco packet tracer to secure this technology using VPN. This is because VPN establishes a secure, encrypted connection between a computer and the internet, providing a private tunnel for ones data and communications while he/she uses public networks. Thus, provide users with a secure communication platform and at the same time optimized the technology using QoS technologies so as maintained and assure service’s performance and to avoid degradation of speech quality.