This attribute indicates the total number of Far-End Line Severely
Errored Seconds (FELSESs) that have been counted. A FELSES is
declared for second intervals containing more than x FELCVs or
one or more L-RDI defects. The value of x is 154 for a 155 Mbits/
sec interface. Counting of FELSES is inhibited over second
intervals where a FELUAS is counted.