The Pulse extra call will happen when the following conditions are met :
1. if the Extra Pulse Call setting is configured
2. if the Major or Minor Threshold limit is exceeded
3. if the call failure results in alarms to be sent
4. needs to fail or be satisfactory a given number of times which is set in the Threshold fields in the Test Case without observing a Success result in between.
The test case is configured with the Alert Frequency : "Once"