Video-on-Demand http://en.wikipedia.org/wiki/Video_on_demand http://en.wikipedia.org/wiki/IPTV http://en.wikipedia.org/wiki/Video_on_demandhttp://en.wikipedia.org/wiki/IPTV Video-on-Demand (VoD) are systems which allow users to select and watch/listen to video or audio content when they choose to, rather than having to watch at a specific broadcast time.
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