Hi, does anyone know if there is a way to find out what extensions are programmed to what ports on the phone system? i.e digital card 1 ports 1-16 are 101,102, etc.. Thanks as any info is appreciated.

The most obvious answer would be to look in database programming. If you don't have access to programming, unplug the phone. When it boots up again, the circuit number is displayed momentarily,

That did the trick! Thank you very much.