Rhodes University - Department of Computer Science 1 Re-establishing and improving the experimental VoIP link with the University of Namibia: A Case Study.

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Rhodes University - Department of Computer Science 1 Re-establishing and improving the experimental VoIP link with the University of Namibia: A Case Study ____________________________ Alfredo Terzoli and Mosiuoa Tsietsi Ricky Ngandu

Rhodes University - Department of Computer Science 2 Steps Obtain in-depth knowledge on VoIP and understand the implementation process of VoIP Understand the network at University of Namibia Deploy VoIP Understand methods of traffic shaping and implement it on the VoIP link Test live video by sending real-time video stream to SIP agents

Rhodes University - Department of Computer Science 3 Deliverable Establish a fully working VoIP link between UNAM and Rhodes

Rhodes University - Department of Computer Science 4 RU – UNAM VoIP Link

Rhodes University - Department of Computer Science 5 iLanga OS - Fedora core 6 Zaptel telephony drivers ISDN Interface cards installation and drivers Apache, PHP, MySQL Flash front end

Rhodes University - Department of Computer Science 6 Challenges Geographic separation makes it challenging to streamline VoIP deployment between UNAM and Rhodes Liaise with UNAM network administrator to open discussions with UNAM’s ISP for traffic shaping Liaise with UNAM’s ISP to implement VoIP traffic prioritization for SIP messages sent from Rhodes Recess at UNAM made access to campus facilities difficult and thus delaying the deployment process Due to limited bandwidth at UNAM critical iLanga installations were delayed for long periods of time

Rhodes University - Department of Computer Science 7 Work to be done Based on my milestones I am slightly ahead of schedule but demanding practical work is to be done in the next two terms Finalise the installation of iLanga at UNAM Create a test bed at Rhodes to experiment with traffic shaping Implement traffic shaping at UNAM’s ISP Determine the optimum codec to use on the VoIP link Test link to see if live video can be sustained

Rhodes University - Department of Computer Science 8 Questions?