CONTENTS

 1     Scope
 2     References
        2.1     Normative references
        2.2     Informative references
 3     Definitions
 4     Abbreviations
 5     Protocol stack and system models
        5.1     Protocol stack model
        5.2     System model/overview
        5.3     Logical model
 6     Protocol stacks
        6.1     S1 – broadcast or narrowcast content – audio, video, data
        6.2     S2 – ACD/ACD and DDC between server and STB
        6.3     S3 – Session control signalling
 7     PPP data-link set-up
 8     Network congestion control
 9     Session control in interactive services
        9.1     Introduction
        9.2     Session establishment
        9.3     Session release
        9.4     Status inquiry
        9.5     Connection reset