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 Friday, November 16, 2007

Study Group 9 consented Recommendations on IPTV and advanced HDTV proposals during meetings held Oct. 29 - Nov. 2, Louisville, Colorado.

The meeting saw participation from all around the world with several delegates from developing countries including Kenya, India and Trinidad and Tobago.

Recommendation J.700 - IPTV Service Requirements and Framework for Secondary Distribution - defines service level requirements and an architectural framework for telecommunication networks to provide new services based on IPTV. It refers to "secondary distribution" which means use of a transmission channel for distribution of video/audio programs to users at large, for example by an over-the-air broadcast channel or by means of a fiber or cable network.

The Recommendation is extensive and includes requirements for network elements as well as customer premises equipment (CPE), including middleware application interfaces which consist of software libraries that provide uniform access to system services. It leverages existing deployed technologies, such as MPEG, DOCSIS, GEM (Globally Executable MHP), and IPCablecom to provide a smooth path for operators to integrate IPTV technology into their networks. While in the process of developing this Recommendation considerable liaison with other Study Groups and the IPTV Focus Group was carried out.

In addition to the IPTV work, Recommendations relating to second - and third - generation IPCablecom were consented. Equipment based on IPCablecom Recommendations, such as modems, set-top boxes, signalling equipment, interactive television application platform interfaces, digital program insertion, and others have had widespread implementation in networks in Asia, Europe, and North America.

The new Recommendations add to a suite of more than 25 which have been developed for cable and hybrid networks primarily designed for television and sound program delivery to the home.

Large screen digital imagery (LSDI) is a family of digital imagery systems that includes very large screen presentation of programmes similar to the non-digital IMAX and OMNIMAX systems. LSDI is described as an optimal approach to the presentation of high-definition television (HDTV) programmes, to a collective audience on cinema-like screens in a cinema-like environment. An earlier approved Recommendation J.600 addresses use of a broadband service or channel for transferring audio or video information to a production center where post-production processing may take place before subsequent distribution. At this meeting work towards a new Recommendation - Network Service Operator's Requirements for Real-time Transmission of exLSDI Signals under Parallel Processing Functionality - was significantly progressed. This Recommendation is related to the transport of program signals conforming to the higher levels of the LSDI expanded hierarchy as used for contribution and primary distribution. The term contribution means use of a broadband service or channel for transferring audio or video information to a production center where post-production processing may take place before subsequent distribution. Primary distribution is the use of a transmission channel for transferring audio and/or video information from a production center to one or several destination points; for example, to a broadcast transmitting center or the headend of a cable distribution network. Work on LSDI takes place with interactions between ITU-T Study Group 9, ITU-R Study Group 6, and other bodies external to the ITU.

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