The "Event-Timestamp" AVP

The "Event-Timestamp" Diameter AVP, which is of type Time, uses the AVP code "55".

It has the MANDATORY flag.

It is part of the Accounting-Request, Accounting-Answer, Credit-Control-Request, Credit-Control-Answer, Message-Process-Request commands.

It is part of the Monitoring-Event-Report-Data, Monitoring-Event-Information, NAT-Control-Record, NIDD-Submission grouped AVPs.