This parameter specifies an override for the maximum frame-based bandwidth limit (in megabits per second) for scheduler priority class 3 on HSMDA (High-Speed Multi-Data) ports in Nokia TIMETRA equipment. Network operators use this to enforce traffic policing independent of standard QoS policies, with a value of -2 indicating no override is applied. This allows fine-grained control over per-class traffic shaping on high-speed interfaces.