The Telecommunication Standardization Sector (ITU-T) coordinates standards for telecommunications on behalf of the International Telecommunication Union (ITU) and is based in Geneva, Switzerland.

The standardization work of ITU dates back to 1865, with the birth of the International Telegraph Union. It became a United Nations specialized agency in 1947, and the International Telegraph and Telephone Consultative Committee (CCITT), (from the French name "Comité Consultatif International Téléphonique et Télégraphique") was created in 1956. It was renamed ITU-T in 1993.

ITU has been an intergovernmental public-private partnership organization since its inception and now has a membership of 191 countries (Member States) and over 700 public and private sector companies as well as international and regional telecommunication entities, known as Sector Members and Associates, which undertake most of the work of the Sector.

ITU-T has a permanent secretariat, the Telecommunication Standardization Bureau (TSB), based at the ITU HQ in Geneva, Switzerland. The elected Director of the Bureau is Mr. Malcolm Johnson of the UK. Mr. Johnson was elected by the ITU Membership to the Directorship for a 4-year term in November 2006.

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Wed Sep 9 15:10:24 2009

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REL is sent when either the calling or called party hangs up the call cause = 16 An REL is also sent in the backward direction if the called party line is busy cause = 17 Figure 13 ANSI and ITU T Release REL Message Format Release Complete Message A Release Complete Message RLC is sent in the opposite direction of the REL to acknowledge the

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Zarlink timing chip beats Telcordia ITU T specs An analog timing chip that delivers what is claimed to be the industry s best combination of performance and features for sonet sdh synchronous optical network synchronous digital

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Modulation . ITU. -. T. G.992.1. Latency type Interleaved Noise margin (Down/Up) 11.4 dB / 23.0 dB. Line attenuation (Down/Up) 26.0 dB / 14.0 dB. Output power (Down/Up) 19.8 dBm / 12.4 dBm. Loss of Framing (Local) 0. Loss of Signal (Local) 0 ...

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