Capture bus system pulse/video and do an action (doorbell / intercom)

Hi, i have a project in my mind, i have a doorbell, see link below, its the setup manual (dutch, but i think you can manage)

so it contains an doorbell and speaker/minotor inside
it has no IP interface, but is it somehow possible to capture a pulse or something,from the UTP wires, so i can push a notification to HA, so i can trigger something else?
also, there must a video on the wires, any possibility to capture that stream? anyone an idea how i can manage this?

thnx in advance