ITU-T G.9971 PDF

This recommendation specifies the functional requirements of transport functions in an IP home network associated with the wireline access network based on the generic architecture described by ITU-T Recommendation G.9970 "Generic home network transport architecture". As popularity of broadband services such as FTTH, VDSL and DOCSIS 3.0 increases, this recommendation covers the cases of home networks connecting to wireline access networks such as these. Services on this home network are triple play services, such as voice, video and data transfer services. However, incorporation of FMC using in-home base station is for further study. Once a home network is connected to an access network, mechanisms need to exist that allow the network operator to manage fault, performance, transfer capability, addressing and security for the home network. In many cases these will be the same as those used to managWe the access network. Note that although the NT/ONT, which terminates an access network, is also studied in this recommendation from the view point of the home network management, it is out of scope that devices are directly connected to NT/ONT without an AGW. Moreover, the scope only includes the case where Ethernet MAC service (which may be over a variety of physical layers) is provided at WAN side of NT/ONT.

While ITU-T Recommendation G.9960, G.9961 and G.9972 specify the physical layer, such as transceiver, and the mapping between the physical layer and Layer 2 protocols, G.9971 studies the subject of IP and Ethernet Bridging technologies, which does not overlap with the scope of these recommendations.

This recommendation first clarifies the position of the home network in end-to-end transport networks as well as the home network functional architecture and then provides the functional requirements for the transport capabilities of some key components in the home network, such as the Access Gateway (AGW), IP Terminal and so on. Moreover, it mentions some other functional requirements, such as QoS control, management and security so that the operators can reliably provide their services all the way to the IP Terminal.