DS DS/EN 50478
DS DSEN 50478 2007-APR-27 Functonal recever specfcaton of satellte dgtal nteractve televson wth a low data rate return channel va satellte - Modem layer specfcaton
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This standard applies for the interaction channel for interactive television networks using Geostationary Satellites with fixed return channel satellite terminals via low data rate dedicated return link. It specifies the essential elements for the implementation of the interaction channel.