ETSI - TS 123 380
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; IMS Restoration Procedures
|Publication Date:||1 September 2019|
The present document specifies the procedures required in 3GPP IMS to handle a S-CSCF or a P-CSCF service interruption scenario with minimum impact to the service to the end user.
NOTE: IMS Restoration Procedures covering service interruption of other network elements are not defined in this version of the specification.