DCC Actions of UGW9811

The UGW9811 can be configured with actions for the following scenarios:

·         The OCS server is Down when a subscriber is being activated.

The UGW9811 can be configured to reject the subscribers activation request or activate the subscriber as an offline charging subscriber.

·         The OCS server is Down after a subscriber is activated.

A subscriber is activated and attempts to access services. The UGW9811 sends an online charging request message to the OCS server and starts the Tx timer. If the UGW9811 does not receive any response from the OCS server within the specified time, the UGW9811 determines that the OCS server fails, and takes the Credit-Control-Failure-Handling (CCFH) or Direct-Debiting-Failure-Handling (DDFH) action to perform a failover for the OCS server.

The CCFH or DDFH action can be either delivered by the OCS server or configured on the UGW9811. The OCS server delivers a CCFH or DDFH action by sending a credit control answer (CCA) message carrying the CC-Session-Failover attribute value pair (AVP) and the Credit-Control-Failure-Handling AVP with the value of an action. Note that the CCFH or DDFH action delivered by the OCS server takes precedence over the CCFH or DDFH action configured on the UGW9811.

·         The CCA message carries a non-successful command-level result code.

A CCA message from the OCS server carries both command-level result code and MSCC-level result code. The MSCC-level result code is used for the service identified by the tariff ID and the command-level result code is used for all online charging subscribers. The configured action for an abnormal command-level result code takes precedence. That is, if there is an abnormal command-level result code, the UGW9811 ignores the MSCC-level result code and takes the action corresponding to the command-level result code.

A 4-digit result code starting with 2 indicates a success and other result codes indicate a failure.

·         The CCA message carries a non-successful MSCC-level result code.

·         A Re-Auth-Request (RAR) message from the OCS server does not carry any rating group (RG).

The UGW9811 can be configured to carry all RGs or no RG in a credit control request (CCR) message triggered by the RAR message without any RGs from the OCS server.

·         The available quotas are exhausted before new quotas are sent from the OCS server.

In the following scenarios, the UGW9811 sends CCR messages to apply for quotas:

§  A subscriber attempts to access a new service.

§  The available quotas are exhausted.