123380 🔥 Direct

The specification covers several critical failure and recovery scenarios across the IMS domain:

: Integrated support for LTE and 5G networks, ensuring that high-speed packet-based services remain resilient. Summary Table: Typical Restoration Nodes Role in Restoration Primary Data Stored S-CSCF Serving node; handles session control SIP proxies, Contact info, Auth info HSS Central database; restores S-CSCF data Private User Identity, Registration Sets P-CSCF Entry point; detects UE status UE local IP, Security associations 123380

: Mechanisms for the Proxy-CSCF to recover its relationship with the user equipment (UE) after a restart. handles session control SIP proxies

: Nodes use indicators (often via IETF RFC 6223) to detect the availability of peers and trigger restoration if a failure is detected. 4. Evolution and Versions Auth info HSS Central database

: Focused on basic IMS recovery for GSM and UMTS.

: Procedures for recovering the Home Subscriber Server, which acts as the central database for user identities and profiles.