I have a new Cisco Phone system, we are using CUCM and at this particular site have a 4321 ISR . The fax line is plugged into port 0/2/0. Inbound faxes come through but when sending outbound faxes it rings one time then cuts out. On the receiving end we get the top quarter of the fax ( about one rings worth apparently) and the rest of the page is blank. The machine end and the receiving end also print out a report page saying fax has failed due to communication issue. I have attached my config.