LevelOne WAB-5120 - Manual (Page 44)

Space in Meter
To decrease the chances of data retransmission at long distance, the WAB-5120 can
automatically adjust proper ACK timeout value by specifying distance of the two nodes.
Flow Control
It allows the administrator to specify the incoming and outgoing traffic limit by checking “Enable
Traffic Shaping”. This is only available in Router mode.
We strongly recommend you leave most advanced settings at their defaults except
“Distance in Meters” adjusted the parameter for real distance; any modification on them
may negatively impact the performance of your wireless network.
Note: