1     Scope         
 2     References              
 3     Definitions 
 4     Abbreviations and acronyms            
 5     Conventions            
 6     Providing the at-most-once functionality      
 7     Transaction identifiers and three-way handshake      
        7.1     Transaction identifiers            
        7.2     Three-way handshake             
 8     Computing retransmission timers    
 9     Provisional responses          
10     Ordering of commands      
11     Stream independence