|Event trigger||Description||Reported from||Condition for reporting|
|QoS change||The QoS of the Default Access Profile in AAA has changed||PCEF||PCRF|
|Out of credit (see note 1)||Credit is no longer available.||PCEF, TDF||PCRF|
|Enforced ADC rule request||TDF is performing an ADC rules request as instructed by the PCRF.||TDF||PCRF|
|Usage report||The IP-CAN/TDF session or the Monitoring key specific resources consumed by a UE either reached the threshold or needs to be reported for other reasons.||PCEF, TDF||PCRF|
|Start of application traffic detection and Stop of application traffic detection (see note 2)||The start or the stop of application traffic has been detected.||PCEF, TDF||PCRF|
|Credit management session failure (see note 1)||Transient/Permanent Failure as specified by the OCS||PCEF, TDF||Always set|
This event may apply only when Gy and/or Gyn are deployed.NOTE 2:
This event may only be triggered by a PCEF enhanced with ADC.
|Credit re-authorization trigger||Description||Applicable for|
|Credit authorisation lifetime expiry (see note 1)||The OCS has limited the validity of the credit to expire at a certain time.||PCEF, TDF|
|Idle timeout (see note 1)||The service data flow identified by a PCC Rules or the application identified by an ADC Rule has been empty for a certain time.||PCEF, TDF|
|QoS changes||The QoS of the access network profile has changed.||PCEF|
This credit reauthorization triggers apply only when Gy and/or Gyn are deployed.