This Unsigned32 value (range 2-10, default 7) sets how many consecutive one-second intervals must each exceed the block-error threshold before an OTU2e (enhanced OTU2, roughly 11.1 Gb/s) trunk carrying an oversized client signal such as 10GbE LAN declares a Signal Degrade (SD) condition under the SDBER detection algorithm. An administrator tunes this to balance fast detection of a genuinely error-prone signal against false alarms triggered by brief error bursts. For example, leaving OTU2e at its default of 7 means a short one-second error spike is ignored, and only a signal that stays above the error threshold for a full 7 consecutive seconds raises the degrade condition.