CLI Reference Guide

110 CHAPTER 4: PLANNING THE 3COM MOBILITY SYSTEM
The ceiling height is based on the surface of the ceiling where the access
points will be mounted, not on the center of the plenum space between
floors.
4 In the Ceiling Type box, select the type of ceiling used most commonly in
the building.
3WXM adjusts the default attenuations based on your selection.
5 To change the default attenuation for radios, type the number of dB in
the 802.11a (dB) box or 802.11b/g (dB) box.
6 Do one of the following:
 Click Apply Changes to apply the changes.
 Click Ignore Changes to clear the changes without applying them.
7 Do one of the following:
 Click Next to configure floor information for the building. (See
“Importing or Drawing Floor Details”.)
 Click Finish to save the changes and close the wizard.
Importing or
Drawing Floor
Details
You can add information for a floor by importing a drawing of the floor
or by using 3WXM’s graphics tools to draw the floor.
After you import or draw the floor, you need to specify the RF
characteristics of the floor, by specifying the attenuation of obstacles
such as walls, doors, windows, and so on. The attenuation of an object
indicates how much the object affects an 802.11 radio signal. 3WXM
uses the attenuation information when calculating how many MAPs you
need and where to place them in order to provide the desired wireless
coverage.
The following sections describe how to import or draw a floor. For
information about specifying the RF characteristics of the floor, see
“Specifying the RF Characteristics of a Floor” on page 130.