WorkItemStarted

After a work item has been started, such as a phone call connected, the driver calls this function.

ISC_RESULT (*WorkItemStarted)
   /* in  */(ISC_CLIENT_HANDLE     handle,
   /* in  */ const ISC_STRING      trackingID,
   /* in  */ const ISC_STRING      oldTrackingID,
   /* in  */ const ISC_STRING      description,
   /* in  */ const ISC_STRING      mediaTargetAddr,
   /* in  */ time_t                			startTime);