IPTV – Internet Protocol Television
IPTV describes the notion of delivering TV services via an IP distribution network, as opposed to the more traditional terrestrial broadcast network. IPTV, along with voice and broadband, forms a Triple Play service, which is being offered by many service providers around the globe. Both unicast and multicast techniques are used in IPTV architectures, with the former in support of video on demand type services and the latter deployed to emulate existing terrestrial services. Unicast services typically use RTSP for control, whereas multicast services use a combination of IP Multicast , IGMP and PIM.
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