Your Oracle Communications Unified Session Manager (OCUSM) now associates the PAU with both the first and second IMPU. The OCUSM considers any request made from that PAU to be a request from the user at the top of its registration cache table irrespective of where the request originated (the IP).

When the SIP interface facing the UE has the reg-via-key and reg-via-match options configured, and the request from the user with the PAU as the From or with PPI, the Oracle Communications Unified Session Managermatches to the proper user based on the source IP.