We recently upgraded from v14 to v15.5 finally. We are now hosting from Google Cloud vs our hosted COLO facility, so the 3CX is still remote. All needed ports/firewall/etc are verified properly open. We were using a Patton 4114 (as FXS ports) to make outbound calls from a modem pool via the SIP trunks. On v14 it was working just fine. However, on v15.5 I can't get the Patton to connect to the server? I created the config off the 3CX server, through the FXS/DECT section. First thing I noticed is that 3CX is missing an important line in their config file. I had to add "route 0.0.0.0 0.0.0.0 10.10.8.1" under the 'context ip router' section, just to get the device to properly ping and see the network. That was a fun trip through the console port to find and resolve. Pretty major flaw. However, even after I finally got the device talking on the network (with no other manual changes other than that "route" line - which is required), it won't properly dial out any of the ports? I can connect an analog phone to the 4114, get a dial tone, but when I dial a number and send, I get a busy tone. I have double/triple checked all the settings and they properly match the extensions tied to each port on the 4114, but none of them are connecting to the 3CX server.