Section: 4.3.2.2.3 Rating Function
Content: The Rating Function (RF) determines the value of the network resource usage (described in the charging event received by the OCF from the network) on behalf of the OCF. To this end, the OCF furnishes the necessary information, obtained from the charging event, to the RF and receives in return the rating output (monetary or non-monetary units), via the Re reference point. The RF may handle a wide variety of rateable instances, such as: - Rating of data volume (e.g. based on charging initiated by an access network entity, i.e. on the bearer level); - Rating of session / connection time (e.g. based on charging initiated by a SIP application, i.e. on the subsystem level); - Rating of service events (e.g. based on charging of web content or MMS, i.e. on the service level).