5.8GHz phone rings near 2.4GHz AP's

Unanswered Question
Jan 2nd, 2008

We have several Cordless 5.8GHz phones ringing randomly near Cisco AP1100's while others further away don't. What can we do to fix this problem?

I have this problem too.
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Very interesting. I have found 5.8Ghz phones sometimes use 2.4Ghz frequencies, possibly for control plane signalling. Have you tried using a spectrum analyzer or the Cisco/Cognio Spectrum Analyzer solution (PCMCIA and software) to verify?

The signal strength diminishes with distance, so moving the phones is the easiest if not most practical thing to do, along with reducing the AP transmit power. The phones are frequency-hoppers so its not likely you can change their behavior. Who's the phone manufacturer?


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