The trap is sent whenever there is a transition from a no alarm state to a state with at least one active alarm. An active alarm state exists if: 1) The atmInterfaceActiveAlarms vector is different than 0. 2) The atmNteAlarmVpTable contains entries. 3) The atmNteAlarmVcTable contains entries. The trap is also sent when a transition into the no alarm state occurs. The second variable will be atmInterfaceActiveAlarms to indicate the kind of the alarm. The trap is not sent more than once in a 10 second interval.