The Effect of Security on Performance in a VoIP Network using An Analytical Simulator

Abstract

Nowadays, Voice over IP (VoIP) is a major and challenging task for communication technology. In this paper, we focus on VoIP which transmits voice over packet switched networks such as LANs or WANs. Adding security to a VoIP system, the quality of service and performance of the system are at risk. The contribution of this paper has two main parts; firstly it illustrates registration call setup using Diffie-Hellman Key Exchange Algorithm. Secondly, it evaluates two key performance of a VoIP: delay and bandwidth using an analytical simulator. The processing steps of this paper are: the Key Exchange Algorithm generates a key to provide authentication. The generated key is used by AES Algorithm to secure the signaling and voice traffic within a VoIP system based on SIP (Session Initiation Protocol) server. In addition, Counting Process in Stochastic Processes is also used for call breakdown.