My desktop, which uses wireless N, loses connectivity many times when I am on a VOIP call. Usually, it loses internet access, but sometimes all access to the network. I cannot even get to my router login sometimes.

I know it is not a wireless interference as I've had the same router, wireless card and cordless phone for a long time.

It cannot be lack of internet bandwidth as I cannot even get to my router login which doesn't even hit the internet.

It seems like the Linksys phone switch is somehow causing my router to disconnect wireless clients (I haven't tried wired clients yet).

Any ideas?