This object configures the threshold for severely errored framing seconds (SEFS) on the SONET section layer, above which an alarm is generated. An administrator uses this to detect loss-of-frame-type problems on the section layer, since SEFS specifically tracks seconds where framing itself was severely disrupted. For example, a rising count of severely errored framing seconds that crosses this threshold would point an administrator toward a framing or clocking problem on the SONET link rather than simple bit errors.