This object selects the frame CoS policy applied by this static transit tunnel, the mid-path counterpart to the same CoS policy choice available on ingress and egress tunnels, as the description states. It determines whether this transit hop applies a fixed CoS marking to traffic it forwards or instead resolves the marking via a CoS mapping table, affecting whether traffic classes stay distinguishable as they pass through this specific mid-path router. For example, choosing a mapped policy at this transit hop preserves distinct QoS treatment for traffic classes passing through, rather than flattening them all to one marking mid-path.