From 1996 to 2000, he was a research fellow with the Department of Computer Science, University College, London, where he conducted research into advanced VoIP and IP-based videoconferencing technologies, and developed one of the earliest RTP teleconferencing implementations. He is co-chair of the Audio/Video Transport and Multiparty Multimedia Session Control working groups of the IETF, and has authored several RFC standards relating to RTP. He holds a Ph.D. in electronic engineering from the University of York. 0672322498AB05092003 See less