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 Friday, November 03, 2006

Over seven hundred people voted for the most influential standards work from ITU-T in a recent poll to celebrate 50 years of CCITT/ITU-T. The work area for video coding received the most votes. The task of video coding is to establish efficient formats for storing and transmitting video data. The work of ITU–T in this field was pioneered in joint projects with the International Organization for Standardization/International Electrotechnical Commission (ISO/IEC). 

In addition to the two video standards that were explicitly mentioned in the poll question (H.262/MPEG2-Video and H.264/AVC), there were several others of substantial importance in the standardization of that field. Specifically, that includes H.120, H.261, and H.263. Signalling System Number 7 (SS7) received the second highest number of votes. SS7 is a common channel signalling system that separates network resource control from the resources being controlled. This fundamental shift enabled the implementation of highly efficient centralized databases for call control, especially valuable for services that may be accessed from any subscriber line (Intelligent Networks, 800/Freephone, credit card, VPN, etc.), and an integral capability on which today’s ubiquitous mobile phone systems depend. Among other service supporting capabilities, it enables monitoring the status of a line to see if it is busy or idle, alerts that indicate the arrival of a call, and the addressing system that routes calls.

The full voting results can be seen here.
See more related information in the ITU-T Newslog.