1. Essentials Guide
  2. Oracle USM Supporting the IMS Core
  3. SIP Digest User Authentication
  4. Oracle Communications Unified Session Manager Authentication Check

Oracle Communications Unified Session Manager Authentication Check

At this point, the Oracle Communications Unified Session Manager has received an MD5 hash from the HSS and an MD5 hash from the UA. The Oracle Communications Unified Session Manager compares the two values and if they are identical, the endpoint is successfully authenticated. Failure to match the two hash values results in a 403 or 503 sent to the authenticating endpoint.

The following image shows the User Authorization and Authentication process:

This image displays the OCUSM or OCCSM supporting a registration authentication check.

Note:

Diagram information states "USM/CSM" when the applicable content applies to both the Oracle USM and the Oracle CSM.

The Oracle Communications Unified Session Manager acts as a SIP Registrar and updates an HSS with the state of its registrants.