Not able to recieve Fax

I have a US Robotics External Voice/fax Modem with Win 2000 pro. I am able to send faxes just fine but when it tryes to recieve I get a communication error. I have it set to be able to recieve in addition to send. Here is a sample out of my modemlog
05-22-2002 14:31:45.829 - Waiting for a call.
05-22-2002 14:31:45.839 - Send: AT#CID=1
05-22-2002 14:31:45.959 - Recv: OK
05-22-2002 14:31:45.959 - Interpreted response: OK
05-22-2002 14:31:45.969 - Send: ATS0=0
05-22-2002 14:31:46.089 - Recv: OK
05-22-2002 14:31:46.089 - Interpreted response: OK

My Event log just says a comunnication error
Dennis