It specifies the terminal for a service purchase and protection system for digital broadcasts, called the 18Crypt system. It is applicable in all countries and regions with suitably compliant broadcasting and multimedia distribution systems. Guidelines for compatible broadcast services are given in this standard. The service purchase and protection functions operate in a pure broadcast environment that may be combined with a bi-directional interactivity channel. is applicable to the following broadcast systems :IPDC over DVB-H systems, DVB T/C/S systems,,MPEG2 TS-based IP systems, Non-MPEG2 TS-based IP systems
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