CONTENTS

 1     Scope
 2     Definitions
 3     System description
 4     Terminal description
        4.1     Configuration
        4.2     Communication modes and terminal types
        4.3     Video coder and decoder
        4.4     Audio coder and decoder
        4.5     Frame structure
        4.6     C&I signals
        4.7     Communication procedures
 5     Call control arrangements
        5.1     Network conditions
        5.2     Call set-up
        5.3     Call release
        5.4     Multiple channels
        5.5     Authentication of the receiving terminals
 6     Intercommunication