ITU-T H.32-1989 Simultaneous Communication by Telephony and Telegraphy on a Telephone-Type Circuit - Line Transmission of Non-Telephone Signals Transmission of Sound-Programme and Television Signals (Study Group XV) 1 pp
The text of this Recommendation can be found in Fascicle 111.4
of the Red Book, ITU, Geneva, 1985
ITU-T H.32-1989 history
1989ITU-T H.32-1989 Simultaneous Communication by Telephony and Telegraphy on a Telephone-Type Circuit - Line Transmission of Non-Telephone Signals Transmission of Sound-Programme and Television Signals (Study Group XV) 1 pp