The fact that you have a Maux card doesn't really matter, other than the fact that SMDR outputs to Com 3 by default (I think). Go to System, then I think SMDR/SMDA and make sure it is turned on and setup correctly, and that it is set to go to the port you are using. Before you do that, though, verify that your baud settings and connection are good by pressing Enter from your terminal program. If connection and settings are good, you should get a FXII banner screen and login. If that works okay, close your terminal program, verify your SMDR settings, reconnect, then run some calls thru and see if it works.