As a consequence of a reform process within the International Telecommunication Union (ITU), the CCITT
ceased to exist as of 28 February 1993. In its place, the ITU Telecommunication Standardization Sector (ITU-T) was created as of 1 March 1993. Similarl
ITU-T G.121-1993 history
1993ITU-T G.121-1993 Loudness Ratings (LRs) of National Systems Study Group 12