Koch TC50 Message when ringing

Hi. I just installed the Opener on my Koch TC50 intercom and it works fine. It was a little fight but now it works. I was wondering, if I can wire it in the way, that I get a notification even if someone rings at my apartment door not only when someone rings at the building door. Any Idea if I have to plug any other cables from the intercom into the little nuki cable-switch?

How did you get it working?I can not open the door, not with ring, not with the app.