Online charging system


Online charging system is a system allowing a communications service provider to charge their customers, in real time, based on service usage.

Architecture

Event based charging

Event based charging function is used to charge events based on their occurrence rather than their duration or volume used in the event. Typical events are SMS, MMS, purchase of a content.
Event based charging function is used when the CC-Request-Type AVP = 4 i.e. for event request ex: diameter-sms or diameter-.....

Session based charging

The session based charging function is responsible for online charging of network / user sessions, e.g. voice calls, IP CAN bearers, IP CAN session or IMS sessions.

Account and balance management

The account balance management function is the location of the subscriber’s account balance within the OCS.