TBRI-PT (TN2185 ISDN Trunk-Side BRI Port)
Issue 4 May 2002
10-1677 555-233-123
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 10-616. TEST #623 CRC Error Counter Test
Error
Code
Te s t
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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