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 H.331-1993 history
1993ITU-T H.331-1993 Broadcasting Type Audiovisual Multipoint Systems and Terminal Equipment (Study Group XV) 8 pp