You can allow users to view call charges on telephone displays. From a display, a user can see the cost of an outgoing call, both while the call is in progress and at the end of the call. If you want users to control when the display of the call charge information, you can assign a display button that the user can press to see the current call charges. You can also administer the system so that the system displays call charges automatically whenever a user places an outgoing call.