This attribute displays whether a Line Remote Failure Indication
(LRFI) alarm state has been entered. An L-RFI alarm state is
entered when Line Remote Failure Indication (L-RDI) defects have
been observed and accumulated for a period of 2.5 seconds +/- 0.5
seconds. The L-RDI defect is the occurrence of the L-RDI signal in
five contiguous valid STS (STM) frame (110 pattern in bits 6,7, and
8 of the K2 bytes). If the L-RDI defects are intermittently occurring,
the L-RDI defect accumulator is decremented at a rate of 1/10 of
the incrementing rate (alarm integration ratio of 1/10), with all
measurements based on a 200 ms polling cycle.
The Sonet/Sdh component goes into an operational state of disabled
until the L-RFI alarm condition is cleared. The condition is cleared
after not detecting the L-RDI signal for a period of 10 seconds +/-
0.5 seconds.
The rxRfiAlarm attribute is always set to off when the component
has been locked and left offline.