3Com WX1200 Reference Manual page 117

If you are using a complex concave polygon as a coverage area,
computation of MAP access points might take longer than the
computation for an area with a less complicated shape.
When drawing a coverage area, make sure it extends just short of external
walls. If the coverage area includes external walls, 3WXM accounts for the
external walls when computing how many MAP access points are required
for the coverage area. This might lead to an inaccurate MAP count.
1 Display the floor plan in the Content panel.
2 In the Task List panel, click Tools.
3 In the Create area under Coverage Area, click one of the icons and draw
the object as described in the following table.
Object
(circle)
(square)
(parallelogram)
(polygon)
(line)
(cursor)
Defining Wireless Coverage Areas
Action
Diagonally drag the cursor over the area where you
want the circle to appear.
Diagonally drag the cursor over the area where you
want the square to appear.
1 Click at a vertex, and drag the cursor to the next
vertex.
2 Click again, and drag the cursor until the
parallelogram takes the shape you want.
3 Click to finish.
1 Click at a vertex, then move the cursor to the next
vertex.
2 Repeat until the polygon takes the shape you want.
For a polygon with n sides, click n-1 additional times
at the vertices. For example, to draw a 7-sided
polygon, click at 6 vertices.
3 At the last vertex before completing the shape,
Right-click to complete the polygon.
1 Click at the start of the line.
2 Drag the cursor to the end of the line.
3 Click to finish.
1 Click to exit Insert Area mode.
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