1. Essentials Guide
  2. Oracle USM Supporting the IMS Core
  3. HSS Server Assignment
  4. Register Refresh
  5. Core-side SAR Lifetime

Core-side SAR Lifetime

The Oracle Communications Unified Session Manager maintains a timer for user registrations per SAR on the core side as specified above. The core-side SAR lifetime timer is configured in the location update interval parameter in the sip registrar configuration element. This timer ensures that the HSS always has the correct Oracle Communications Unified Session Manager address, by sending SAR messages periodically.