ETSI TS 101 224

The DVB In-home Digital Network (IHDN) can be subdivided into a Home Access Network (HAN) for the connection to external networks and a Home Local Network (HLN) for interconnections of user equipment to clusters and between rooms. In addition to the DVB access technologies DVB-S, DVB-C, DVB-T, DVB-SMATV, DVB-MC and DVB-MS (EN 300 421/429/744/473/748/749) with the interaction channels for interactive broadcast services (EN/ETS 300 800/801/802/(1)195/199/205), the IHDN-HAN specification will focus on the definition of new interfaces and network terminations (NT), such as an xDSL modem or an external cable modem. The existing DVB transmission systems form part of the HAN architecture, but access the IRD without any influence from other sections of the HAN. Different versions of HAN are possible. The HAN for use with an active NT is based on an ATM interface operating at 25 or 51 Mbps. The IEEE 1394 interface with the long reach extension has been selected for the HLN. Extension of the DVB interactive systems reference model with the IHDN. The network clouds show logically the association to corresponding services (broadcast, interactive broadcast, interactive multimedia services). Physically they may overlap and not all of them may be used in parallel. The broadband access network is new; which enables broadband multimedia services, such as video on demand and switched digital broadcast, over twisted pair lines with an xDSL modem. It may also be used for interaction purposes in combination with any broadcast delivery network.