This object specifies whether the MPLS TTL is fixed or inherited from the frame at this transit hop, the mid-path counterpart to the same TTL policy choice on ingress tunnels, as the description states. Since a transit router necessarily decrements or manages TTL as part of forwarding an LSP, this setting at each hop collectively determines whether the customer's original TTL semantics survive the full multi-hop path or get hidden along the way. For example, a transit hop configured to inherit continues propagating the frame's real TTL rather than overriding it with a fixed value at this specific point in the path.