System information

BSR 64000 Configuration and Management Guide
14-28
SLOF Section loss of frame errors.
SLOF is detected when a severely errored frame (SEF) defect on the
incoming SONET signal persists for 3 milliseconds.
b1-tca B1 BER TCA (crossing threshold)
For B1, the bit interleaved parity error report is calculated by
comparing the BIP-8 code with the BIP-8 code extracted from the B1
byte of the next frame. Differences indicate that section level bit
errors have occurred.
LINE Errors that occur in the SONET Line. A line may be between a
SONET SPE, regenerators, and another SONET SPE.
L-AIS Alarm indication signal. Line alarm indication signal is sent by the
section terminating equipment (STE) to alert the downstream LTE
that a LOS or LOF defect has been detected on the incoming
SONET section.
L-RDI Remote defect indication. Line remote defect indication is reported
by the downstream LTE when it detects LOF, LOS, or AIS.
L-REI Line Remote Error Indicator. Conveys a B2 error count detected by
the LTE.
sf-ber The line is considered in failure.
sd-ber B2 errors have exceeded the threshold and the line is considered
degraded.
b2-tca B2 BER TCA (crossing threshold)
For B2, the bit interleaved parity error report is calculated by
comparing the BIP-8/24 code with the BIP-8 code extracted from the
B2 byte of the next frame. Differences indicate that line level bit
errors have occurred.
PATH Errors that occur in the SONET Path. A path may be between a CPE,
SONET SPE, regenerators, and another SONET SPE and CPE.
PLOP Path loss of pointer is reported as a result of an invalid pointer (H1,
H2) or an excess number of new data flag (NDF) enabled indications.
P-AIS Path alarm indication signal errors.
PAIS is sent by line terminating equipment (LTE) to alert the
downstream path terminating equipment (PTE) that it has detected a
defect on its incoming line signal.
Table 14-10 SONET Alarms and Identifications
Alarm Identification