I recently installed a vg224 for fax capability and setup using sccp. I am running CUCM 6.1.1. All faxes connected to this device have dial tone and can dial out and receive calls but faxes do not always work. About 80% of the time faxes get a comm error after they have connected. Then on redial it works, sometimes. The same goes for receiving faxes. This is very frustrating, please help. See attached config for the vg224.