3Com WX1200 Reference Manual page 147

3 To change the starting floor for channel assignment, select the floor from
the Begin On Floor List. By default, 3WXM starts at the top floor and
works down.
4 To change the ending floor for channel assignment, select the floor from
the End On Floor List.
The ending floor number must be lower than or equal to the starting
floor number.
5 To change the radio type for which to assign channels, select the radio
type from the Technology list. By default, 3WXM assigns channels for all
radio types on the MAPs placed in the building.
6 To prevent 3WXM from taking the channel assignments for the floor
above into account when calculating the channel assignments for a floor,
clear Use Cross-Floor Channel Information.
7 Click Next. The Channel Assignment Progress page appears.
8 Review the results. The 802.11a channel assignments are listed on the
802.11a Radio(s) tab. The 802.11b/g channel assignments are listed on
the 802.11b/g Radio(s) tab.
Computing MAP Placement 147