This counts the total number of seconds during 2047-pattern DS0 far-end testing on this port that contained at least one bit error. As the complement to pportDS0BitErrorFreeSeconds, a high errored-seconds count relative to test duration on this specific channel suggests errors are spread out and persistent rather than a single isolated burst, which points toward a chronic line problem rather than a transient event. Five errored seconds scattered evenly across a one-hour test on this DS0 channel would suggest an ongoing marginal condition, versus all five occurring in one burst which would suggest a single transient event.