A read-write CwrPercentageValue, in units of 0.00001 percent, setting the codeword error-rate percentage at or above which a second is classified as a Severely Errored Second (SES). SES is the standard telecom-style measure of a genuinely bad second, so this threshold effectively defines the line between merely degraded performance and outright severe link impairment. For example, a support engineer troubleshooting frequent SES counts on a subscriber link would check whether p2mpSuLinkSESThresh has been set unusually low, making the link overly sensitive to reporting severe errors.