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I have an issue with my WLAN, and I'm hoping someone might be able to point me in the right direction.

My WLAN is in several rooms within a hospital environment. It seems to be configured properly, but every once in a while, I lose connectivity. It happens intermittently, and without any warning.

I can either wait a while for it to come back up, or if I power-reset the AP it comes back up.

Does anyone
a) have any idea where I should begin my search for the problem, and
b) know how much I should expect to pay if I bring in a 3rd party to solve this for me?

Thanks!

-Any known interferance in the area?
-What's the signal level and quality?
-Did you checked, it happens randomly? or in specific (work) hours?
-Checked APs latest firmware's?
-Tried the connectivity with other wireless client (pcmciausbpci whatever) brands?
-Tried different channel? (or channels if more than 1 Access Points used)
-If you use Windows operating systems, check all the latest windows updates done!

So you think it might be an issue with interference? I'll look into the other suggestions you made, but I have a feeling that firmware, OS patches, etc are all up to date.

Thanks again!