1     Scope         
 2     References              
 3     Terms and definitions          
        3.1     Terms defined elsewhere       
        3.2     Terms defined in this Recommendation           
 4     Abbreviations and acronyms            
 5     General principles  
 6     Procedures for the transport of APDUs         
        6.1     Call-related procedures          
        6.2     Call-independent procedures 
        6.3     Sending the ITU-T H.450.1 supplementary service APDU           
        6.4     Receiving the ITU-T H.450.1 supplementary service APDU        
        6.5     Actions at a source entity       
        6.6     Actions at a destination entity             
 7     Messages   
        7.1     Overview      
        7.2     SETUP            
 8     ITU-T H.450.1 supplementary service APDU 
        8.1     Network facility extension (NFE)          
        8.2     Interpretation APDU  
        8.3     ROS APDUs   
 9     Encoding of information described using ASN.1         
10     ASN.1 definitions of generic parameters      
       10.1     Addressing information         
       10.2     H225InformationElement      
       10.3     General error list      
11     Manufacturer-specific information 
       11.1     Manufacturer-specific operations      
       11.2     Manufacturer-specific additions to standardized operations    
12     Object identifiers defined in this Recommendation