This feature enables per port TC-To-COS mapping, where TC represents Traffic-Class and COS represents Vlan tag PCP bits. While at present there is a global TC-To-COS mapping, we can use the TC-To-COS feature to create custom profiles which can be applied to the required interfaces. 

4.23.0F 4.23.2F EOS 4.23.2F Per Port Tc To COS EOS 4.26.1F