3Com Wireless LAN Controller WX2200 User Manual page 49

RF Plan Optimization 49
Based on RF measurement data you gather in 3WXM to optimize the RF
model of a floor, you can make configuration changes in the software to
improve signal strength and coverage for groups or individuals, modify
MAP locations, or add additional equipment to your wireless network if
statistics indicate your network has outgrown the support provided by its
current deployment of WX switches and MAPs.
You also can import RF measurement data based on a site survey done
outside of 3WXM. See the "Using RF Measurements from MAPs" on
page 180 for general guidelines about performing a site survey.