This read-write SSMQualityLevel object sets the minimum acceptable received Quality Level an admin expects on a Synchronous-Ethernet port when QL Mode is enabled, with the valid value set depending on the SYNC entity's Network Clock Type. It matters because if the actually-received QL falls below this expected minimum, the port's timing source should be considered unsuitable and the system should fail over to a better clock reference. For example, an admin who only wants to accept a primary-reference-quality clock on a given input would set cmEthernetNetPortExpectedQL accordingly so any lower-quality received QL causes that source to be disqualified.