CONTENTS

 1     Scope
 2     References
 3     Terms and definitions
 4     Abbreviations
 5     Interactivity and the role of interaction paths
 6     Reference model for the interaction channel
 7     Specification of the broadcast channel
 8     Specification of the interaction channel
        8.1     Interaction channel transport mechanisms
        8.2     Interaction channel characteristics
 9     Management functions
Appendix I  –  Technical parameters under study