1. Essentials Guide
  2. Oracle USM Supporting the IMS Edge
  3. Temporary Public User Identities and Multi-SIM Scenarios
  4. Old Behavior

Old Behavior

Before the introduction of this change, the Oracle Communications Unified Session Manager (OCUSM) associated the PAU only with the first IMPU request. The OCUSM considered any request made from that PAU to be a request from the first user, regardless of the request’s originating IP.

Depicts a PAU assigned to first user instead of originating IP.

When the SIP interface facing the UE had the reg-via-key and reg-via-match options configured, the OCUSM rejected the request from the second user with the PAU as the From or the PPI. Because it only associates the PAU with the first user, the OCUSM issued a 403 message.

Depicts a PAU assigned to first user instead of originating IP and the call failing due to OCSBC configuration.