Data Sessions or Voice Calls Incorrectly Charged When GGSN Exceeds the Granted Data Volume Reserved by the Online Charging System
(Doc ID 1374434.1)
Last updated on FEBRUARY 10, 2022
Applies to:Oracle Communications Network Charging and Control - Version 2.2.0 to 4.3.0 [Release 2.2 to 4.3]
Information in this document applies to any platform.
Some GGSN (Gateway GPRS (general packet radio service) Support Node) data and/or voice sessions may occasionally allow the end user, or subscriber, to use slightly more data volume or time than granted by the Online Charging System (OCS).
In simple terms, a GGSN will request permission for a subscriber to have a data session (or a voice call) and the OCS will confirm permission and answer back with a reserved amount of data volume (or time) that the data session (or voice call) may use (based on subscriber's account balance or credit limits, etc). The GGSN requests more data (or time) as needed, or informs the OCS of the final amount of data volume (or time) used at session end.
When a GGSN Diameter Credit-ControlRequest message reports more data volume (or time) usage than was granted by the OCS, the following type of error message is generated in the system log file (/var/adm/messages) on the Service Logic Controllers (SLC):
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