1997ETSI ETS 300 801-1997 Digital Video Broadcasting (DVB); Interaction Channel Through Public Switched Telecommunications Network (PSTN)/Integrated Services Digital Network (ISDN)
1996ETSI PRETS 300 801-1996 Digital Video Broadcasting (DVB); Interaction Channel Through (PSTN / ISDN)
ETSI PRETS 300 801-1997 Digital Video Broadcasting (DVB); Interaction Channel Through PSTN/ISDN was changed to ETSI ETS 300 801-1997 Digital Video Broadcasting (DVB); Interaction Channel Through Public Switched Telecommunications Network (PSTN)/Integrated Services Digital Network (ISDN).