Table of Contents

 1     Scope          
 2     References
 3     Definitions
 4     Abbreviations and acronyms             
 5     Conventions            
 6     Signalling architecture for emergency calling in an IMS roaming environment             
 7     Functional requirements of emergency calling in an IMS roaming environment          
        7.1     Functional requirements for IMS         
        7.2     Functional requirements for EPC         
 8     Signalling requirements for emergency calling in an IMS roaming environment          
 9     Signalling procedures for emergency calling in an IMS roaming environment
        9.1     Signalling procedure for inbound UE with retrieval MSISDN from PCRF
        9.2     Signalling procedure for inbound UE without a retrieved MSISDN from the PCRF           
10     Security considerations      
Appendix I  Use cases of emergency calling in IMS roaming over LTE    
        I.1     UE supports emergency calling in a PS domain
        I.2     UE does not support emergency calling in a PS domain
Bibliography