A CallEvent is a type of Event in UML elements supported by Cameo Simulation Toolkit. A CallEvent of an Operation is triggered when you call an Operation with a specified Method. If an Operation is called without a Method, the CallEvent will be automatically generated. You can use the CallEvent on AcceptEventActions and Transitions as shown in the following figures.

A CallEvent on the AcceptEventActions of Actions.

 A CallEvent on the Transitions of States.