http://192.168.2.9/ISAPI/Event/triggers/vehicledetection-1
   <EventTrigger><id>vehicledetection-1</id><eventType>vehicledetection</eventType><direction>both</direction><videoInputChannelID>1</videoInputChannelID><EventTriggerNotificationList><EventTriggerNotification><id>IO-1</id><notificationMethod>IO</notificationMethod><notificationRecurrence>beginning</notificationRecurrence><outputIOPortID>1</outputIOPortID></EventTriggerNotification></EventTriggerNotificationList></EventTrigger>:

http://192.168.2.9/ISAPI/Event/triggers/vehicledetection-1
   <EventTrigger><id>vehicledetection-1</id><eventType>vehicledetection</eventType><direction>both</direction><videoInputChannelID>1</videoInputChannelID><EventTriggerNotificationList /></EventTrigger>: