The value of tmnxDS1BerSdThreshold specifies a bit error rate (BER)
threshold used to determine when to send a tmnxEqPortDS1Alarm
notification for a BER SD failure and a tmnxEqPortDS1AlarmClear
notification for a BER SD failure clear. Bit error computed must
reach/exceed threshold value over a pre-defined period of time
for the tmnxEqPortSonetAlarm notification to be sent.

The value of tmnxDS1Framing defines how the bit error is
computed and what values of tmnxDS1BerSdThreshold are allowed.
The following table defines this dependency:

tmnxDS1Framing   Bit error calculation and value supported
--------------   -----------------------------------------
  esf  (1)       each CRC error is counted as one bit error
  g704 (4)       values supported are 1,5,10,50,100

  other values   bit error alarms not supported, value
                 of tmnxDS1BerSdThreshold set to default and
                 cannot be changed

tmnxDS1BerSdThreshold value must not exceed the value of
tmnxDS1BerSfThreshold.