scope:

This Recommendation describes the IPTV functional architecture intended to support IPTV services based on the IPTV service requirements and definitions [b-ITU-T IPTVFG]. Starting from a basic description of IPTV roles and services, a high level IPTV functional model is outlined. This model is then developed into a more detailed functional architecture. Specific cases are also described in more detail.

The IPTV functional architecture is based on the use of existing network components and technologies, as well as on NGN architectures. This leads to three possible options for the architectural representations:

1) IPTV functional architecture for non-NGN network components.

2) IPTV functional architecture based on the NGN functional architecture, but not based on IMS.

3) IPTV functional architecture based on NGN and its IMS components.

The common elements between these alternatives, as well as the differences, are described in this Recommendation.