This read-only Counter tallies the number of Red Alarms received on the T1 line, indicating this end has lost frame synchronization with the incoming signal. An admin treats a rising Red Alarm count as a serious local receive-side problem, often preceding a full service outage on that circuit. For example, a burst of Red Alarms just before a T1 line drops to the down state would confirm a local framing/sync failure as the root cause.