This PerfCounter64 counts a path-layer alarm-second condition abbreviated SASs for an E1/T1 interface in the current bin; the source description does not further expand the term beyond naming the counter. An admin nonetheless tracks any nonzero value here as an active path alarm condition on the circuit right now, worth correlating with the interface's other live path counters (ESs, SESs, AISs) to characterize the fault. If e1t1StatsPathSASs begins incrementing at the same time as e1t1StatsPathAISs on the same T1, the admin would treat both as part of the same in-progress path alarm event rather than investigate them separately.