I have a UC520, setup in PBX mode, with 3 incoming FXO lines. The staff needs to answer the phone differently depending on which line the call is coming in on.
I know that i can setup a DN for each line, and PLAR each port to it's corresponding DN. Then i would have to map a button on each phone to each DN. I am wondering if there is a better way. The lines do not need to have their own buttons, i just need the phone to display which line the call is coming in on. Is there any way to do this?
As I am writing this, I just had a thought. What if i configure the DNs and PLARs as above, but then setup each DN as an overlay on top of the user's extension. If it is PLARed to one of those DNs, i believe the incoming call shows which DN in the overlay it is calling across the bottom of the phones. I will try that.
Also, if i do setup buttons for each line, is there an easy way to map a phone button to a perticular FXO port? i.e. user picks up phone, hits 'line 2', and is guaranteed to use the outgoing FXO line 2? I believe I cannot use traditional FXO trunking because I can't configure in key system mode. But maybe there is some kind of hybrid config that would allow me to do this?
