1. Essentials Guide
  2. ENUM Based Oracle Communications Unified Session Manager
  3. Update to ENUM Database on Endpoint Connection Loss
  4. Registration Cache and User Database Removal

Registration Cache and User Database Removal

When the Oracle Communications Unified Session Manager sets up the initial REGISTER request from a UA, an internal binding is created between the contact and the AoR for that user. If a UA is considered unreachable by either of the four conditions explained in the previous section, the following occur:

  • The contact’s entry in the registration cache is removed. If this is the last contact registered for an AoR, the entire entry for the AoR is removed from the registration cache.
  • The Oracle Communications Unified Session Manager sends an UPDATE to the ENUM user database removing the Contact.

To enable these actions, you must configure the force unregistration option sip config configuration element and also set the unregister on connection loss parameter in the sip interface configuration element to enabled.