This attribute indicates the total number of one second intervals for which the E3 far-end path is unavailable. The E3 far-end path becomes unavailable at the onset of 10 consecutive Far End Severely Errored Seconds (FESES). It comes available at the onset of 10 contiguous seconds with no FESES. The unavailable time includes the initial 10 seconds to enter the unavailable state but not the 10 seconds to exit the state For second intervals where FEUAS is counted, counting of Far End Coding Violations (FECV), Far- End Errored Seconds (FEES), Far-End Severely Errored Seconds (FESES) and Far-End SefAis Seconds (FESAS) are inhibited.