CONTENTS

Summary
Introduction
 1     Scope 
 2     Normative references       
        2.1     Identical ITU-T Recommendations | International Standards           
        2.2     Paired ITU-T Recommendations | International Standards equivalent in technical content     
        2.3     Additional References        
SECTION  1  –  GENERAL    
 3     Definitions  
        3.1     Reference Model definitions           
        3.2     Service conventions definitions       
        3.3     Naming and Addressing definitions 
        3.4     Presentation Service definitions      
        3.5     Presentation protocol definitions     
 4     Abbreviations   
        4.1     Data Units 
        4.2     Types of presentation-protocol-data-units  
        4.3     Other abbreviations           
 5     Overview of the presentation protocol      
        5.1     Service provided by the Presentation Layer
        5.2     Service assumed from the Session Layer    
        5.3     Functions of the Presentation Layer
        5.4     Presentation functional units
        5.5     Model of the Presentation Layer    
SECTION  2  –  PRESENTATION  PROTOCOL  SPECIFICATION    
 6     Elements of Procedure     
        6.1     User data parameters         
        6.2     Connection establishment   
        6.3     Normal release of connection         
        6.4     Abnormal release of connection     
        6.5     Context alteration  
        6.6     Information transfer
        6.7     Token handling      
        6.8     Synchronization and resynchronization        
        6.9     Exception reporting
       6.10     Activity management         
 7     Mapping of PPDUs onto the session‑service        
        7.1     Connection establishment   
        7.2     Normal release of connection         
        7.3     Abnormal release of connection     
        7.4     Context alteration  
        7.5     Information transfer
        7.6     Token handling      
        7.7     Synchronization     
        7.8     Resynchronization  
        7.9     Exception reporting
       7.10     Activity management         
 8     Structure and encoding of PPDUs
        8.1     General  
        8.2     Structure of SS-user data parameter values
        8.3     Encoding of SS-user data parameter values
        8.4     Encoding of values of type User-data         
        8.5     Rules of extensibility for normal mode         
SECTION  3  –  CONFORMANCE    
 9     Conformance    
        9.1     Dynamic Conformance      
        9.2     Static Conformance           
        9.3     Protocol implementation conformance statement     
10     Precedence     
Annex  A  –  State Tables    
        A.1     General 
        A.2     Notation for state tables    
        A.3     Conventions for entries in state tables        
        A.4     Actions to be taken by the PPM    
        A.5     Definition of sets and variables       
        A.6     Relationship to Session-service      
Annex  B  –  Registration of Transfer Syntaxes    
        B.1     Introduction          
        B.2     Registration Procedures     
        B.3     Form of registration of a transfer syntax     
Annex  C  –  Corrections and enhancements incorporated in ITU-T Rec. X.226 | ISO/IEC 8823-1