Summary

Recent mass deployments of broadband optical access networks allow general consumers to use 100 Mbit/s or more bandwidth at affordable costs. This bandwidth has potential of transmitting high‑quality video signals up to HDTV. Internet Protocol is generally employed on the broadband fibre networks. This Recommendation provides the requirements of multichannel video transmission system over IP-based fibre network including cable television networks with high-level architecture.

It is assumed that the television services are provided in the same way as the current CATV system. The unicast based VoD, which involves a unicast session, is not taken into consideration. However, the broadcast based VoD, which has been integrated into the CATV broadcasting system, is taken into account. In this Recommendation, the broadcast based VoD is assumed to be provided by a multicast stream instead of a broadcast signal, and can be treated as a broadcasting service.