A read-write Unsigned32 setting the minimum number of total codewords that must be transmitted in an operational hour before the error-percentage threshold in p2mpHe1HrPctErrCWThresh is even evaluated. This prevents a lightly loaded hour with very little traffic from producing a misleadingly extreme error percentage that would otherwise trigger a false alarm. For example, if only a handful of codewords were transmitted in a quiet hour and one happened to be errored, that could look like a 100 percent error rate; requiring p2mpHe1HrMinTotalCWThresh codewords first ensures the percentage threshold is only judged against a statistically meaningful traffic volume.