csOc3ApsControl is a read-write enable/disable switch that, based on its name alongside the related csOc3ApsForce and csOc3ApsActivePort objects, turns Automatic Protection Switching on or off for this OC3 port's redundant fiber pair (its source description was left blank). APS automatically fails traffic over from a working fiber to a protect fiber when a fault is detected, so this switch is the master control an admin relies on for that automatic redundancy to actually function during a fiber cut. For example, an admin provisioning a new pair of protected OC3 fibers would confirm csOc3ApsControl is set to enable before trusting that a single fiber cut won't take the circuit down.