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TBRI-PT (TN2185 ISDN Trunk-Side BRI Port)
Issue 5 October 2002
1637
555-233-119
CRC Error Counter Test (#623)
This test is non-destructive. This test reads the BRI port’s CRC error counters that
are maintained on the BRI circuit pack. The Cyclic Redundancy Check (CRC) is a
means of error detection used to determine the integrity of data frame contents.
The CRC error counter is incremented by the circuit pack when it detects a CRC
error. The test passes if the value of the counter is 0 (that is, the error is cleared).
If the counter is non-zero, the test fails, and the value of the counter is displayed in
the
Error Code
field.
Table 476. TEST #623 CRC Error Counter Test
Error
Code Test
Result Description/ Recommendation
ANY FAIL This error occurs when a frame with a bad CRC is received over the
D-Channel by the BRI board. This error is reported on a per-port basis
when the counter goes over the threshold. This error is most likely due to a
problem with the wiring or interference on the wiring caused by a noise
source or no termination. It usually does not indicate a problem with the
circuit pack.
PASS The CRC error counter was read correctly and has a value of 0.
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