CONTENTS

 1     Scope 
 2     References 
 3     Terms and Definitions      
 4     Abbreviations and Acronyms       
 5     Relationship to Global Information Infrastructure   
 6     Relationship to ITU-T Rec. X.200 – OSI Basic Reference Model
 7     Basic functionality divisions in NGN         
        7.1     Separation between services and transport 
        7.2     Relationships between NGN basic reference model and ITU-T Recs G.805, G.809 and       Y.110    
 8     General functional model  
        8.1     Functions
        8.2     Resources 
 9     Multi-layer aspects          
        9.1     Inter-layer and intra-layer interaction          
        9.2     Co-ordination activities      
        9.3     Multi-layer network scenario in NGN        
10     Service convergence by NGN    
11     Multimedia services        
       11.1     The support of multimedia services
       11.2     The access to the services and the support (of the services) requests          
12     Identification and location
13     Emergency communications        
14     Interactions between NGNs and non-NGN environments
15     Security    
16     Quality of Service (QoS)
       16.1     QoS classes         
       16.2     QoS control mechanisms  
       16.3     QoS control functional architecture
       16.4     QoS control/signalling       
Annex A – Relationship of NGN to OSI BRM    
        A.1     Distribution of layer functionality    
        A.2     Ordering of protocol layers           
        A.3     Peer semantics of layers    
        A.4     Mode of transmission        
Annex B – Principles retained/not retained from X.200 for NGN    
        B.1     X.200 parts applicable to NGN    
        B.2     X.200 parts not applicable to NGN           
Appendix I – Example of convergence of services    
        I.1        Service scenario   
        I.2        System configuration        
Appendix II – Interactions between NGNs and non-NGN environments    
       II.1     Introduction           
       II.2     Principle for IWF between NGNs  
       II.3     Agent model for interworking         
BIBLIOGRAPHY