ZyXEL NWA3000-N User Manual Page 125

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Chapter 9 Wireless
NWA3000-N Series User’s Guide
125
Figure 53 An Example Three-Channel Deployment
Three channels are situated in such a way as to create almost no interference with
one another if used exclusively: 1, 6 and 11. When an AP broadcasts on any of
these three channels, it should not interfere with neighboring APs as long as they
are also limited to same trio.
Figure 54 An Example Four-Channel Deployment
However, some regions require the use of other channels and often use a safety
scheme with the following four channels: 1, 4, 7 and 11. While they are situated
sufficiently close to both each other and the three so-called “safe” channels (1,6
and 11) that interference becomes inevitable, the severity of it is dependent upon
other factors: proximity to the affected AP, signal strength, activity, and so on.
Finally, there is an alternative four channel scheme for ETSI, consisting of
channels 1, 5, 9, 13. This offers significantly less overlap that the other one.
Figure 55 An Alternative Four-Channel Deployment
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