Table of Contents

 1 Scope            
 2 References   
 3 Definitions   
        3.1 Terms defined elsewhere
        3.2 Terms defined in this Recommendation     
 4 Abbreviations and acronyms  
 5 Conventions
 6 Reference model        
        6.1 Transmission function    
        6.2 Subscriber function         
        6.3 Control function              
 7 Functional requirements           
        7.1 Transmission functional requirement          
        7.2 Control function              
        7.3 Subscriber function         
Bibliography