Nuki Opener with FERMAX residence system

Hello Nukiers,

Look here is a picture of my installation knowing that:

I live in a group of several buildings, all protected by common fence with intercom door
Each building has also its own intercom
Picture #1 is installation on my floor
Picture #2 is installation in my apartment.

How do you think I can plug Opener ?

Thank you community.

PIC#1 :
PIC#2 :