This read-write attribute sets the alarm severity generated when the corrected-FEC threshold is crossed on the ComPort, defaulting to Minor. Since FEC correction masks underlying signal degradation until it eventually fails, controlling this severity determines how early operations gets warned that the demodulator is working unusually hard to correct errors. For example, an engineer wanting earlier warning of degrading downstream SNR might raise stuAlmSevFecThres so climbing FEC-correction counts get flagged before uncorrectable errors start.