This sets the acknowledgment timeout, in microseconds, used for this radio's Wireless Distribution System (WDS) bridge link, with specific values corresponding to different link distances, such as 20us for under a mile up to 115us for 6-10 miles. An admin bridging two sites over a long-distance wireless link must increase this timeout to account for the extra propagation delay, or frames will be needlessly retransmitted. For example, an admin setting up a 5-mile WDS bridge between two buildings would set wdsApAckTimeout to 75, the value for the 3-to-6-mile range, rather than leaving it at the default for short-range links.