De-Registration
When an contact de-registers with expires=0, it means that the endpoint is removing all of its contacts from registration. When this occurs, the Oracle Communications Session Border Controller sends an STR message to the PCRF to terminate the session. If the de-registration message does not reflect a complete de-registration, the Oracle Communications Session Border Controller does not send the STR message to the PCRF. The STR message includes the following information:
<ST-Request> ::= < Diameter Header: 275, REQ, PXY >
| AVP | AVP Contents |
|---|---|
| Session-ID | OriginHost;0;0;<Key to Registration
Cache>
Key is usually the endpoint’s AoR. |
| Auth-Application-ID | Application-ID of Rx (16777236) |
| Origin-Host | <ext-policy-server_name>.<ext-policy-realm>.<domain-name-suffix> |
| Origin-Realm | <ext-policy-realm>.<domain-name-suffix> |
| Destination-Realm | <IP Address of endpoint>@<destination realm of this AAR> |
| Destination-Host | N/A |
| Termination-Cause | DIAMETER LOGOUT (1) - User initiated a disconnect |