CONTENTS

1 Scope 
2 References
3 Definitions
4 Abbreviations  
5 PSTN/ISDN emulation in NGN
6 Call server based PSTN/ISDN emulation functional architecture         
        6.1 Description of functions  
        6.2 Service architecture          
        6.3 Reference points  
        6.4 Relationship between functional entities in CS-based PSTN/ISDN emulation functional architecture and NGN architecture     
        6.5 Interworking with other service components      
        6.6 Interconnection with RACF        
        6.7 Interconnection with NACF        
        6.8 Interworking with other networks           
7 IMS-based PSTN/ISDN emulation functional architecture      
        7.1 Overview 
        7.2 Overview of functional entities of the IMS-PES
        7.3 Internal reference points  
        7.4 Service architecture          
        7.5 External reference points 
        7.6 Interconnection with other networks       
        7.7 Reference points with the network attachment control function (NACF)          
        7.8 Reference point with the resource and admission control function (RACF)      
        7.9 Mode of operation           
       7.10 Mapping between IMS-PES functional entities and NGN functional entities  
Bibliography