1    
Scope             
 2    
References    
        2.1    
ITU-T  
        2.2    
IETF    
        2.3    
ETSI    
        2.4    
Broadband Forum            
 3    
Definitions    
        3.1    
Terms defined elsewhere 
        3.2    
Terms defined in this Recommendation      
 4    
Abbreviations and acronyms   
 5    
Emergency telecommunications (ET) and early warning description               
        5.1    
General               
        5.2    
Emergency telecommunications   
        5.3    
Early warning    
 6    
General considerations for emergency telecommunications and early
warning             
 7    
General functional requirements and capabilities                
        7.1    
Emergency telecommunications   
        7.2    
Early warning    
 8    
General security guidelines and requirements        
        8.1    
General guidelines             
        8.2    
General requirements       
 9    
Mechanisms and capabilities supporting emergency telecommunications in
NGN       
        9.1    
General               
        9.2    
Service stratum 
        9.3    
Transport stratum             
        9.4    
NGN access technology support    
10    
End-to-end support for emergency telecommunications   
11    
Mechanisms and capabilities supporting some aspects of early warning in
NGN        
       11.1    
General              
       11.2    
Common alerting protocol (CAP)                
       11.3    
Procedures for the registration of arcs under the alerting object
identifier arc     
12    
Service restoration priority       
13    
Protection switching and restoration      
       13.1    
General considerations   
       13.2    
SDH protection architectures        
       13.3    
Optical transport network (OTN)  
       13.4    
Ethernet linear protection switching             
       13.5    
Ethernet ring protection switching                
       13.6    
Linear protection switching for transport MPLS (T-MPLS)    
       13.7    
ATM protection switching             
       13.8    
Protection switching for MPLS networks    
Appendix I – Emergency telecommunications categories     
        I.1    
              Individual-to-authority emergency telecommunications            
        I.2    
              Individual-to-individual emergency telecommunications           
        I.3    
              Authority-to-authority emergency telecommunications             
        I.4    
              Authority-to-individual emergency telecommunications            
Appendix II – Example use cases for early warning alert systems     
       II.1    
Push model        
       II.2    
Pull model          
Appendix III – Example ETS call/session flows for NGN     
Bibliography