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The paper is concerned with the design and development of a P2P PresentationSystem (P2P-PS) for live streaming of lectures coupled with a shareablewhiteboard. Video streaming uses a data-driven modified mesh architecture whichsupports dynamic fanout. The whiteboard may be used in synchronization with anactive video streaming session. It is shared by both the presenter and theparticipants in the audience for graphic illustrations during the lecture.P2P-PS provides an important feature called {\em ask doubt} that allows anyparticipant to send a query (or a doubt) during an active presentation session.The query is disseminated to all other peers by preserving the causalitybetween {\em ask doubt} and its resolution. A buffered approach is employed toboost the performance of the whiteboard. The simulations experiments wereperformed with over 1000 peer nodes on Emulab using 200 physical nodes. Theresults show that the proposed overlay eventually stabilizes even in thepresence of a churning rate of up to 30\%. The maximum path length being justsix hops. The estimated throughput is found to be close to our theoreticalresults.

An Integrated P2P Framework for E-Learning