User manual

AP User Manual January 2004
Software Release 4.1
The channels of adjacent APs should be separated by at least 20 MHz. However, 25 MHz of
separation is advised.
5.7-GHz AP Cluster Recommended ISM/U-NII Channels
Six non-overlapping ISM/U-NII channels are recommended for use in a 5.7-GHz AP cluster:
(All Frequencies in GHz)
5.735 5.775 5.815
5.755 5.795 5.835
The fully populated cluster requires only three channels, each reused by the module that is
mounted 180° offset. The six channels above are also used for backhaul point-to-point links.
As noted above, a 5.7-GHz AP enabled for ISM/U-NII frequencies can operate on a frequency as
high as 5.840 GHz. Where engineering plans allow, this frequency can be used to provide an
additional 5-MHz separation between AP and BH channels.
5.5.7 Example Channel Plans for AP Clusters
Examples for assignment of frequency channels and sector IDs are provided in Table 7, Table 8,
and Table 9. Each frequency is reused on the sector that is at a 180° offset. The entry in the
Symbol column refers to the layout in Figure 22 on Page 57.
NOTE: For more information on sector IDs, see Configuration Page on Page 78.
Table 7: Example 2.4-GHz channel assignment by sector
Direction of Access
Point Sector Frequency Sector ID Symbol
North (0°) 2.4150 GHz 0 A
Northeast (60°) 2.4350 GHz 1 B
Southeast (120°) 2.4575 GHz 2 C
South (180°) 2.4150 GHz 3 A
Southwest (240°) 2.4350 GHz 4 B
Northwest (300°) 2.4575 GHz 5 C
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