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R7.  IMS Registration signalling flow —
Network-initiated deregistration upon UE roaming and registration to a new network

 

 

 

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IMS R7-1a. SIP REGISTER request (via P-CSCF2): from UE1 to P-CSCF2

R7-1a.  SIP REGISTER request (via P-CSCF2): from UE1 to P-CSCF2  (2 of 15)