This Gauge counts Far End Coding Violations, reported via the far-end block error (FEBE) count from the remote Medium/Section/Line interface, accumulated during the current 15-minute interval. An admin cares because a rising Far-End CV trend without a corresponding local CV trend suggests a one-directional problem specific to this device's transmit path, distinct from a bidirectional fiber or connector issue that would show up on both ends. For example, a slow climb in Far-End CV alongside stable near-end CV points toward degrading transmit optics on this local device rather than a shared physical medium problem.