Line Errored Seconds. A Line Errored Second, according to T1M1.3, is a second in which one or more Line Code Violation error events were detected. While many implementations are currently unable to detect the zero strings, it is expected that interface manufacturers will add this capability in deference to ANSI; therefore, it will become available in time. In the T1M1.3 specification, near end Line Code Violations and far end Line Errored Seconds are counted. For consistency, we count Line Errored Seconds at both ends.