Allied Telesis AT-WA7400 - Manual (Page 31)

AT-WA7400 Wireless Access Point Installation Guide
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Microwave Ovens
Microwave ovens operate in the same frequency band as 802.11g
and 802.11b radios; therefore, if you use a microwave oven within
range of your wireless network, you may notice network
performance degradation. Both your microwave oven and your
wireless network will continue to function, but you may want to
consider relocating your microwave oven out of range of your
access point.
Cordless Telephones
If you have an 802.11g or 802.11b radio in your access point, the
radio may experience interference from some cordless
telephones. For optimal performance, consider operating cordless
telephones out of range of your access points.
Other Access Points
Access points that are configured for the same frequency and that
are in the same radio coverage area may interfere with each other
and decrease throughput. You can reduce the chance of
interference by configuring access points at least five channels
apart, such as channels 1, 6, and 11.