This attribute displays whether a PLCP Remote Alarm Indication
(RAI) failure alarm state has been entered. An RAI failure alarm
occurs when ten consecutive PLCP RAI bits (bit 5 in the G1 byte)
are high on the incoming line. An RAI failure alarm is cleared when
ten consecutive RAI bits are set to 0.
Note: Some standards call this alarm RFI.
The rxRaiAlarm attribute is always set to off when the DS3 or E3
component has been locked and left offline.