This can be done by using the "Age Time" functionality in the Spectrum Alarm Notification Manager (SANM). When creating the Alarm Filter in SANM, enter the time you wish to age the alarm in the "Age Time" field.
Basically, when the alarm passes a filter, SANM will hold the alarm for the specified time. If the alarm still exists (has not been cleared automatically or by the user) after the time has expired, then SANM will forward the alarm to the AlarmNotifier application for further processing.
If the alarm has been cleared before the time has expired, SANM will not forward the alarm to the AlarmNotifier application.