1[1]EN301 192-1999, Digital Broadcasting for Television, Sound and Data Service:DVB specification for data broadcasting.
2[2]ISO/IEC 13818-6, Information technology-Ceneric coding of moving pictures and associated audio information-Part 6: Extension for Digital Storage Media Command and Control (DSM-CC)-International Standard (IS).
3[3]ETS 300 802-1997, Digital Video Broadcasting (DVB); Network-independent protocols for DVB interactive srevices.
