4.1.2 The Home Network Domain 4.1.2.1 HNED as end point In the context of the present document, the concept of home network domain is confined to the physical home network that interconnects an HNED with the broadband access network through the Delivery Network Gateway (DNG) function, and where the HNED is considered the end-point in the IPTV ecosystem. There may be multiple HNEDs connected to the same DNG. The detailed functionality of the DNG is not defined in the present document, and the basic architecture is shown in Figure 2. The DVB HNED device is logically connected to the network by means of the IPI-1 interface over which the network/transport, session and application layer protocol interactions occur for each of the various IPTV service functions considered in the present document.
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