Analysis Of Session Initiation Protocol With VoIP In Multimedia Conferencing System

Today various applications like Command line client (OH phone, SIP), Video conferencing server (MCU), SIP answering machine, gatekeeper and gateways, Gnome Meeting. Session Initiation Protocol (SIP) is a multimedia conferencing protocol standard by ITU-T. Open SIP project is the most comfortable and most economical approach to develop an open source implementation of the SIP protocol standard in the form of a library. This Open SIP Library is written in and based on Open source library (OPSlip). Open SIP library is used to develop various applications like Command line client (OH phone, Callen-SIP), Video conferencing server (MCU), SIP answering machine, gatekeeper and gateways, Gnome Meeting. In this project, the first SIP Protocol standard is implemented using the Open SIP Project on two endpoints without a gatekeeper. OH, phone, Callen-SIP, and NetMeeting were used for calling purpose. The performance analysis of this SIP protocol is done by measuring different QoS parameters like network bandwidth, Delay, Jitter and Packet loss. An investigation of the suitable tools led to the use of Ethereal and me perf as packet analyzers. Pack-ETH was used as a load generator. From the output of packet analyzers relative delay, jitter and packet loss are calculated. The result showed that protocol efficiency is more sensitive to changes in Jitter.