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Performance Evaluation of Desktop Videoconferencing
Mued L, Lines BL, Furnell SM, Reynolds PL
Proceedings of PG Net 2001 ? 2nd Annual Postgraduate Symposium on the Convergence of Telecommunications, Networking and Broadcasting, Liverpool, UK, pp13-17, 18-19 June, 2001
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This paper discusses the evaluation of multimedia conferencing systems with respect to audio and video quality. We investigated various aspects that affect the perceived audio and video quality in desktop videoconferencing (DVC), including network constraints (packet loss, delay jitter and delay), CODEC, and task performance. The paper outlines the benchmarking of Microsoft NetMeeting, using the subjective assessment method of Mean Opinion Score (MOS) and concludes that the various factors mentioned above have different effects and that video is the main determinant of the overall perceived audiovisual quality.

Mued L, Lines BL, Furnell SM, Reynolds PL