Delacon sends an event for each call made. By default, there will be one event per call.
If you have any customised Google Analytics set up, there may be more than one event per call.
The event is generally sent into Google Analytics several minutes after the call is completed.
The default event categories are outlined in this FAQ.
The default event action is "duration" and mirrors the call duration. The event value can be set as outlined here for goal conversions.
The default event label will consist of the business name of the service. The event label can be customised to contain more detailed call data and allow for specific goal setups. More info can be found here.
The event categories can be found under Behaviour > Overview