This read-write object sets the severity, minor, major, or dontcare, assigned to LOS (loss of signal) or clock mismatch alarms raised by the FRSM-HS1/HS2/HS2B card. An administrator tunes this to control how prominently such alarms are escalated in network management, since not every deployment treats a clock mismatch as equally urgent. For example, a lab or test circuit where clock mismatches are expected and unimportant might have this set to dontcare to suppress unnecessary alarm noise.