CONTENTS

 1 Scope 
2 References 
 3     Definitions  
        3.1 Terms defined elsewhere    
        3.2     Terms defined in this Recommendation       
 4     Abbreviations   
5 Conventions     
6 Concepts and background           
        6.1 NGN service assurance overview  
        6.2 Reference model in the NGN environment  
        6.3     Business context of B2B/C2B interface      
7 Function framework         
        7.1     Trouble administration        
        7.2     Testing Management          
        7.3 Appointment management  
        7.4 SLA/QoS management      
Appendix I – A scenario example     
        I.1 Scenario Description        
        I.2 Example of trouble administration process flow     
Bibliography