CONTENTS

 1 Scope 
2 References 
3 Definitions  
4 Abbreviations   
5 General      
        5.1 Master-slave determination
        5.2 Capability exchange           
        5.3 Logical channel signalling procedures          
        5.4 Receive terminal close logical channel request         
        5.5 H.223 multiplex table entry modification     
        5.6 Audiovisual and data mode request
        5.7 Round-trip delay determination      
        5.8 Maintenance loops 
        5.9 Commands and indications 
Annex A – Messages: Syntax     
Annex B – Messages: Semantic definitions     
        B.1 Master-Slave Determination messages       
        B.2 Terminal capability messages         
        B.3 Logical channel signalling messages
        B.4 Multiplex Table signalling messages
        B.5 Request Multiplex Table signalling messages          
        B.6 Request Mode messages   
        B.7 Round-trip Delay messages           
        B.8 Maintenance Loop messages         
        B.9 Communication Mode Messages   
       B.10 Conference Request and Response Messages       
       B.11 Multilink Messages           
       B.12 Logical Channel Bit rate Change Messages           
       B.13 Commands          
       B.14 Indications           
       B.15 Generic messages 
Annex C – Procedures     
        C.1 Introduction          
        C.2 Master-slave determination procedures     
        C.3 Capability exchange procedures    
        C.4 Unidirectional Logical Channel signalling procedures          
        C.5 Bidirectional Logical Channel signalling procedures
        C.6 Close Logical Channel procedures
        C.7 H.223 Multiplex Table Procedures
        C.8 Request Multiplex Entry procedures          
        C.9     Mode Request procedures
       C.10 Round-trip delay procedures        
       C.11 Maintenance Loop procedures     
Annex D – Object identifier assignments     
Annex E – ISO/IEC 14496-2 Capability Definitions     
Annex F – Logical Channel Bit-Rate Management Capability Definitions     
Annex G – ISO/IEC 14496-1 Capability Definitions     
        G.1 Capability Identifier           
        G.2 Capability parameters used for capability negotiations and logical channel signalling 
        G.3 Capability parameters used for logical channel signalling only          
Annex H – ISO/IEC 14496-3 Capability Definitions     
Annex I – GSM Adaptive Multi-Rate Capability Definitions     
        I.1      Definition of mode signalling and bit stuffing to achieve octet alignment       
Annex J – TDMA ACELP Voice Codec Definitions     
Annex K – TDMA US1 Voice Codec Definitions     
Annex L – CDMA EVRC Voice Codec Definitions     
Annex M – ISO/IEC 13818-7 and ITU-R BS.1196 Definitions     
Annex N – RFC 3389 – RTP Payload for Comfort Noise     
Annex O – L16 Capability Identifier     
Annex P – Bounded audio stream capability     
Annex Q – Generic Capability for Nx64K Circuit Relay over IP     
        Q.1 Introduction          
        Q.2 Description           
Annex R – Adaptive Multi-Rate Capability Definitions     
        R.1 Introduction          
        R.2 Description           
Annex S – Internet Low Bit Rate Codec (iLBC) Capability Definitions     
        S.1 Introduction           
        S.2 Description
Appendix I – Overview of ASN.1 syntax     
        I.1 Introduction to ASN.1     
        I.2      Basic ASN.1 data types   
        I.3 Aggregate data types       
        I.4      Object identifier type        
     Page
Appendix II – Examples of H.245 procedures     
       II.1 Introduction           
       II.2 Master-slave Determination Signalling Entity           
       II.3 Capability Exchange Signalling Entity          
       II.4 Logical Channel Signalling Entity     
       II.5 Close Logical Channel Signalling Entity       
       II.6 Multiplex Table Signalling Entity      
       II.7 Mode Request Signalling Entity       
       II.8 Round-trip Delay Signalling Entity   
       II.9 Bidirectional Logical Channel Signalling Entity         
Appendix III – Summary of procedure timers and counters     
      III.1 Timers    
      III.2 Counters 
Appendix IV – H.245 extension procedure     
Appendix V – The replacementFor procedure     
Appendix VI – Examples of H.263 Capability Structure Settings     
       VI.1 Examples of Enhancement Layer H.245 parameter setting 
       VI.2 Examples of Video Back Channel H.245 parameter setting
Appendix VII – Procedure and template for defining new capabilities with H.245 generic capabilities     
      VII.1 Procedure
      VII.2 Template  
      VII.3 Example Template – H.261          
Appendix VIII – List of generic capabilities and generic messages defined in Recommendations/Standards other than this Recommendation     
Appendix IX – ASN.1 usage in this Recommendation     
       IX.1 Tagging 
       IX.2 Types    
       IX.3 Constraints and Ranges     
       IX.4 Extensibility          
Appendix X – Resolution of unidirectional and bidirectional conflict scenarios     
        X.1 Both terminals use bidirectional OLC         
        X.2 Master proposes bidirectional OLC and slave proposes unidirectional OLC           
        X.3 Master proposes unidirectional OLC and slave proposes bidirectional OLC           
        X.4 Master proposes bidirectional OLC with nullData and slave proposes unidirectional OLC     
        X.5 Both terminals propose bidirectional OLC with nullData