CONTENTS

 1     Scope
 2     Normative references
 3     Definitions
 4     Symbols and abbreviations
 5     Conventions
 6     General H-Series interworking definitions
Annex A – H.323-H.320 interworking
        A.1     Summary
        A.2     Definitions
        A.3     Abbreviations
        A.4     Overview
        A.5     Mapping H.323 System Control (H.245) to H.320 System Control (H.242)
                  A.5.1     H.221 commands/CAPS
                  A.5.2     H.230 commands
        A.6     Mapping H.323 Call Control (H.225.0) to H.320 Call Control on N-ISDN (Q.931)
        A.7     Inward and outward calling
                  A.7.1     Inward calling
                  A.7.2     Outward calling
        A.8     Securing encrypted connections between H.320 and H.323 terminals