The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the International Telecommunication Union. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to
ITU-T P.58-1993 history
1993ITU-T P.58-1993 (WITHDRAWN) Head and Torso Simulator for Telephonometry - Telephone Transmission Quality Objective Measuring Apparatus (Study Group XII) 28 pp