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IP traffic trends and forecasts suggest that TeleVision over IP (IPTV) will be the killer application for Next-Generation Networks (NGNs). There is, however, a chicken and egg situation between the deployment of broadband access networks and the diffusion of high quality multimedia services, such as high definition television, which actually impairs the development of NGNs. As a matter of fact, most existing access infrastructures are still under-provisioned and they provide no suitable support to the widespread diffusion of global Internet TV channels, while wireless access networks are sprouting worldwide to provide nomadic connectivity and to bridge digital divide in sparsely-populated regions.
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