The document contains the core Digital Video Broadcasting (DVB) requirements to enable the interactive services supporting broadcasting to the home with the narrowband return channels.
DIN ETS 300802:1998 history
1998DIN ETS 300802:1998-06 Digital Video Broadcasting (DVB) - Network-independent protocols for DVB interactive service; English version ETS 300802:1997
1998DIN ETS 300802:1998 Digital Video Broadcasting (DVB) - Network-independent protocols for DVB interactive service; English version ETS 300802:1997