1     Scope 
 2     References 
 3     Terms and definitions       
 4     Abbreviations   
 5     Conventions     
 6     Description of the DTE/DCE interface (physical layer)      
        6.1     ITU-T X.21 interface         
        6.2     X.21 bis interface  
        6.3     V-series interfaces 
        6.4     G-series interfaces 
        6.5     I-series interfaces   
 7     Description of services     
        7.1     General definition   
        7.2     Multiplexing           
        7.3     Service aspect       
        7.4     Frame transfer priority       
        7.5     Frame discard priority        
        7.6     Frame relay service class   
        7.7     Support of both service class and priorities 
        7.8     SVC related services         
 8     Service parameters and service quality     
        8.1     Scope    
        8.2     Service parameters
        8.3     SVC related service parameters     
        8.4     Service quality       
 9     Data link transfer control  
        9.1     General  
        9.2     Frame format         
        9.3     Addressing
        9.4     Transmission consideration 
        9.5     Frame relay data transmission service over SDH    
        9.6     Fragmentation        
10     Call connection control   
       10.1     General 
       10.2     Signalling channel  
       10.3     List of the signalling channel link layer parameters  
       10.4     Call states 
       10.5     Message definitions           
       10.6     General message format and information element coding    
       10.7     Call establishment and clearing procedures
       10.8     Status enquiry and status procedures         
       10.9     Restart procedure 
      10.10     Handling of error conditions         
      10.11     List of timers        
      10.12     Closed user group facility 
      10.13     Transit network selection facility   
      10.14     Reverse charging facility   
      10.15     Frame Transfer priority    
      10.16     Frame Discard priority     
      10.17     Frame Relay Service Class          
      10.18     Support of both Service Class and Priorities         
      10.19     Charging information        
11     PVC management procedures     
       11.1     Overview 
       11.2     Message definition
       11.3     Message specific information elements       
       11.4     Description of procedures 
       11.5     Optional bidirectional network procedures
       11.6     System parameters           
12     Congestion control          
       12.1     General 
       12.2     Impact of congestion         
       12.3     Congestion notification      
       12.4     DTE congestion detection method and actions       
Annex A – List and status of the X.36 parameters    
Annex B – Functional support at the DTE/DCE interface    
        B.1     Protocol Capabilities (PC) 
        B.2     Frames protocol data units (FR)    
        B.3     System Parameters (SP)    
Annex C – Consolidated Link Layer Management (CLLM) message    
        C.1     Address octets      
        C.2     Control field          
        C.3     XID information field         
        C.4     FCS field  
        C.5     Network CLLM message transmission procedure 
Annex D – Use of frame relay for multiprotocol encapsulation    
        D.1     General frame format        
        D.2     Frame format for ISO CLNP (ISO/IEC 8473)      
        D.3     Frame format for IP          
        D.4     Frame format for protocols with Ethertype code point        
        D.5     Frame format for bridged packets 
        D.6     Low layer compatibility negotiation procedures      
        D.7     Examples  
        D.8     Protocol encapsulation format       
Annex E – Usage of cause and location    
        E.1     Location field generation    
        E.2     Cause values         
        E.3     Coding of the diagnostic field         
Annex F – Use of NSAP at the DTE-DCE interface    
        F.1     Introduction           
        F.2     Encoding of X.121 numbers as NSAP       
        F.3     Encoding of E.164 numbers as NSAP       
        F.4     Other ATM End System Address coding   
Annex G – Enhancements to PVC management procedures    
        G.1     Introduction          
        G.2     List of changes to clause 11           
Annex H – Procedures defined in X.36 clause 11 and Q.933 Annex A    
Appendix I – Examples of PVC management error events    
        I.1        Loss of STATUS ENQUIRY message    
        I.2        Loss of STATUS message           
        I.3        Invalid Receive Sequence Number           
Appendix II – DTE congestion detection methods and actions    
       II.1     Implicit congestion detection           
       II.2     Explicit congestion detection           
Appendix III – Handling of physical layer loopback conditions when using frame relay PVC bidirectional procedures     
      III.1     Recommended procedures for DTE/DCE that can detect loopback at the physical layer    
      III.2     Recommended procedures for DTE/DCE that cannot detect loopback at the physical layer    
Appendix IV – Information on address    
       IV.1     Main address and complementary address
       IV.2     Addresses in SETUP message      
       IV.3     Addresses in CONNECT message           
       IV.4     Addresses processing by the network in SETUP message 
       IV.5     Addresses processing by the network in CONNECT message      
Appendix V – International network identification according to ITU-T Rec. X.125 for networks providing frame relay services and numbered  under the E.164 numbering plan    
        V.1     Introduction          
        V.2     Assignment and notification process           
Appendix VI – Call state diagrams at the DCE side of the DTE/DCE interface and DCE actions    
       VI.1     Foreword 
       VI.2     Symbol definition of the call state diagrams
       VI.3     Call state diagrams
       VI.4     Actions taken by the DCE on receipt of message in a given call state at the DCE side of the DTE/DCE interface    
Appendix VII – Window size for a data link layer protocol