1     Scope 
 2     Normative references       
 3     Definitions  
 4     Abbreviations   
 5     Introduction      
 6     Communication between gateways           
        6.1     Internet protocol – TCP or UDP    
        6.2     Gateway facsimile data transfer functions    
 7     IFT protocol definition and procedures     
        7.1     General  
        7.2     IFP packet format 
        7.3     TYPE definitions    
        7.4     The IFP DATA element     
        7.5     Limitation of V.21 frame packet size          
 8     IFP message flow for facsimile modulations up to V.17     
        8.1     Data rate management method 1    
        8.2     Data rate management method 2    
 9     IFT over UDP transport  
        9.1     IFT over UDP transport using UDPTL protocol: IFT/UDPTL/UDP           
        9.2     IFT over UDP transport using RTP protocol: IFT/RTP/UDP          
10     Message flow for V.8 signals and Annex F/V.34 facsimile           
       10.1     V.8 negotiation     
       10.2     V.34 data rate management          
       10.3     Facsimile mode     
       10.4    Compatibility with equipment conforming to prior versions of this Recommendation
Annex A – ASN.1 notation    
        A.1     T.38 (2002) ASN.1 notation         
        A.2     T.38 (1998) ASN.1 notation         
Annex B – H.323 call establishment procedures    
        B.1     Introduction          
        B.2     Communication between facsimile terminal and gateway     
        B.3     Communication between gateways
Annex C – The optional forward error correction scheme for UDPTL    
        C.1     Overview of the optional forward error correction mechanism        
        C.2     Parity encode/decode scheme operation and characteristics           
Annex D – SIP/SDP call establishment procedures    
        D.1     Introduction          
        D.2     Communication between gateways
Annex E – H.248.1 call establishment procedures    
        E.1     Introduction           
        E.2     Communication between gateways 
Annex F – Interworking procedures: T.38 and V.150.1 in the same gateway    
        F.1     Introduction           
        F.2     SSE reason identifier codes for T.38 transition       
        F.3      Mode Override from V.34 Group 3 facsimile to standard Group 3 facsimile          
        F.4     External signalling  
Annex G – H.245 Capability Definition for T.38 over RTP    
Appendix I – Session examples    
        I.1        Session examples 
        I.2        IAF device          
Appendix II – Examples of call establishment procedures described in Annex B/T.38    
       II.1     Sequence examples of call establishment procedures           
       II.2     Protocol data used in call establishment procedures 
Appendix III – H.248 call establishment procedure examples for facsimile-capable media gateways    
      III.1     Introduction           
      III.2     Examples of call setup        
Appendix IV – V.34 session examples     
       IV.1     V.34 session examples      
Appendix V – T.38 Implementation Guidelines    
        V.1     General issue        
        V.2     IAF issues
        V.3     Call-setup issues   
        V.4     Others