This test reads the port’s CRC error counters that are maintained on the circuit pack. The Cyclic Redundancy Check (CRC) is a means of error detection 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, meaning 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.

This test runs on ASAI-PT (ASAI Port), BRI-PORT (ISDN-BRI Port).