3Com WX4400 Reference Manual page 111

9 In the Channel Number listbox, specify the channel number on which the
AP radio will be operating.
10 In the Transmit Power listbox, specify the radio transmit power of the AP.
11 In the MAC Address box, type the MAC address you want to use for this
position of the AP.
To ensure valid site survey results, you must use a unique MAC address
for each LOS point.
12 If the AP model you selected has more than one radio, configure the
other radio.
13 Click Finish to save the changes and close the wizard.
An LOS point icon appears on the floor plan where you clicked to open
the Create AP Placement Point wizard.
Specifying the RF Characteristics of a Floor 111