Dired help


I have a UCM 6208 and FXO port 8 stopped working, and need to configure a GXW410x to receive call from a POT line, but for some reason I am not able to get it to work following the instructions. Can someone please guide me on how I can make calls coming from Port 1 on the GXW410x to ring on a specific extension on the UCM.

Please, help.