1     Scope and purpose           
 2    
References  
 3     Terms and definitions        
 4     Abbreviations    
 5    
Security      
 6     Situation before and during
transition to a full implementation of the enterprise model          
 7     Attributes of reference points for
interconnection between PTNOs and SPs           
        7.1     Security aspects      
        7.2     Service interaction aspects  
        7.3     Charging/billing aspects       
        7.4     Service
availability  
        7.5     Access to a
network address          
        7.6     Management aspects          
 8     Requirements and their priorities
at RPIs   
BIBLIOGRAPHY