I'm trying to configure the Patton 4112 with 3cx and it doesn't seem to be working quite right. I've updated the firmware to 5.3 as 3CX suggested and loaded the config file but it won't let me make an outgoing call unless the "Maximum Simultaneous Calls" is set to 2 per line, and even with that it just rings internally (rings all extensions). Incoming calls don't work at all. Doesn't even try to ring. I also noticed that after loading the configuration file the FXS ports on the Patton unit are both set to "Disable". Is this right??? I've got a feeling the "generate configuration file" doesn't really work. Is there a guide to configuring this manually?