Standardization Sector of Itu General Aspects of Digital Transmission Systems
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چکیده
FOREWORD The ITU-T (Telecommunication Standardization Sector) is a permanent organ of the International Telecommunication Union (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. ___________________ NOTE In this Recommendation, the expression " Administration " is used for conciseness to indicate both a telecommunication administration and a recognized operating agency.
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