I have a 2fxs in my 1750. When I place the call from a phone on the network through a NBX to a phone plugged directly into the fxs port it works fine, phone will ring I can pick up and communicate. But when I place the call from the phone plugged directly into the fxs port to a phone on the network through the NBX system it will ring fine on both ends, but as soon as the phone is picked up I get a fast busy signal. This same result occurs when I try to place a call to a netmeeting client from the fxsport (not going through the NBX), It will ring fine but soon as call is answered there is a fast busy. All IP's are on the same subnet and not passing through the firewall. Please help!
