Summary

The telecommunications industry today is pursuing development of a new generation of television services, typically called IPTV, built upon IP networking technology to deliver integrated triple-play voice, data and video services across a converged network infrastructure. The cable industry has a long history of successfully delivering video services over hybrid fibre/coax (HFC) networks while adding support for data and voice through the DOCSIS and IPCablecom architectures. Recommendation ITU-T J.700 describes the use of the IPTV mechanism, and is intended to support IPTV services over existing cable-based secondary distribution networks and/or other networks to enhance the existing television distribution services.

This revised Recommendation provides a clearer relationship of the IPTV architecture between this Recommendation and Recommendation ITU-T Y.1910, and the relationship to the service provider interface is newly described. In addition, the latest access network technologies for secondary distribution such as radio frequency over glass (RFoG), wavelength-multiplexed video transport over optical fibre, and hybrid use of HFC and optical fibre, are mentioned. This revision is also intended to provide a number of editorial corrections.