This attribute indicates the total number of one second intervals for
which the DS3 far-end path is unavailable. The DS3 far-end path
becomes unavailable at the onset of 10 consecutive Far-End
Severely Errored Seconds (FESES). The 10 FESESs are included in
the unavailable time. Once unavailable, the DS3 far-end path
becomes available at the onset of 10 contiguous seconds with no
FESES. The 10 seconds with no FESES are excluded from the
unavailable time. 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 Sef/Ais Seconds (FESAS) is inhibited.