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Real\u2014time interaction is provided between the conference rooms. Desktop viewers can submit audio or text based questions. Interconnection is accomplished entirely via the corporate IP intranet. Multimedia presentations, including audio, video and graphics, are also digitally recorded for later re\u2014multicasts or on\u2014demand viewing using indexes based on viewgraphs. Network congestion is prevented by restricting the total number of presentations and playbacks. VideoTalks is a prototype system that can be retrofitted to provide for a variety of Internet services, such as remote learning, narrowcasting to niche audiences, video telephony, video conferencing, low cost video\u2014on\u2014demand, etc.<\/jats:p>","DOI":"10.1002\/ett.4460120311","type":"journal-article","created":{"date-parts":[[2008,9,12]],"date-time":"2008-09-12T13:59:54Z","timestamp":1221227994000},"page":"239-246","source":"Crossref","is-referenced-by-count":0,"title":["Video Talks: A comprehensive multimedia conferencing system"],"prefix":"10.1002","volume":"12","author":[{"given":"Glenn L.","family":"Cash","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. 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