I am having an issue where a credit card machine no longer is successfully connecting to the credit card company. Before I was running 3CX version 7 but after the upgrade to version 9 it no longer will connect. I have tried both a linksys 3102 and grandstream 4104 and the lines are routed through a patton with a single pri port. Does any one know of some settings that I can use to help resolve the issue? I also have a postage machine that is also having the same issue. It calls out but is having issues communicating with the other devices.