FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. The ITU-T is responsible for studying technical@ operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC)@ which meets every four years@ establishes the topics for study by the ITU-T Study Groups which@ in their turn@ produce Recommendations on these topics. The approval of Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1. In some areas of information technology which fall within ITU-T's purview@ the necessary standards are prepared on a collaborative basis with ISO and IEC.
V.35-1984由ITU-T - International Telecommunication Union/ITU Telcommunication Sector 发布于 1984-10-01,并于 2010-06-09 实施。
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