@thesis{thesis, author={Petronella Pattinasarani}, title ={Simulasi dan anilisa QOS video conference melalui jaringan interworking IMS – UMTS menggunakan opnet}, year={2016}, url={https://repository.ittelkom-pwt.ac.id/375/}, abstract={Next Generation Network (NGN) is one of the technologies of the future which services such as voice, data, multimedia, and internet which refers to the convergence of IPbased services. A technology that supports the concept of convergence based on IP is IP Multimedia Subsystem (IMS). UMTS is a third generation technology (3G) of mobile cellular that people use because people already using gadget which support 3G. Using the 3G network, people can do video conferencing. Video conference is the one of comunication in a real time which replaces face-to-face. However, video conference on IMS – UMTS network need to know it is reasonable. Video conference has high sensitivity to delay, so should be analysis of QoS. This research will be conducted simulation and analysis QoS of video conference on IMS – UMTS network. This simulation will be created using OPNET modeler 14.5. The scenario in used is Integrated Service (IntServ) scenario for observed the value of Quality of Service (QoS) only on IMS network and Differentiated Services (DiffServ) scenario for observed the connection between IMS – UMTS network. This research used 4 user, 8 user, and 12 user. The time of running simulation is 100 second, 200 second, and 300 second. In the result of the research, in IntServ scenario, the highest value of throughput is 26.643 Mbit/s, end-to-end delay is 233.069 ms, and jitter is 0.073 ms. In Diffserv scenario, the highest value of throughput is 8.484 Mbit/s, end-to-end delay is 164.138 ms, and jitter is 0.488 ms. The result of packet loss for Intserv and Diffserv is under 1 %. All off them have a good quality because not exceed the standard ITU-T G114. Key Words : IMS, UMTS, IntServ, DiffServ, Video Conference.} }