Victor,
A bit off-topic but here are my 50 cents:
Oopppssss, my apologies - I thought it might be a common query for folks thinking about FS - but maybe in another "list"?
-Did you consider building a wireless bridge with a $40 WiFi router running DD-WRT/Tomato/OpenWRT etc?
I did NOT - and I've deployed a lot of them to support "PC"s! THANK YOU!
This way you can plug wired phones into LAN ports of the "bridge" and the router will bridge them to your main access point. Asus WL-520GU will work and is really cheap.
EXCELLENT suggestion! (Maybe I'm drifting even more O-T, but... I'm also glad you did not mention WiFi devices from Linksys - in my experience, some of these boxes performed very poorly, but I seem to be the only one on the planet with these experiences!).
-If you go with WiFi you should only use WPA or WPA2. Less secure options (WEP :-) ) make all conversations accessible to public.
Yes, I think all APs are currently running on WPA2. Thank you VERY much, Victor! - Mike