Doorbell and telephone

Hello everyone!

I am currently in the process of buying a small house and am pondering over a renovation list :-)

I have a really silly question (as a trained electrician):

I want to install a new doorbell system and a new telephone system

What exactly do I need to do to connect the doorbell with my (still to be purchased) cordless phones for intercom and door opener
and how do I combine that with my Unitymedia Fritzbox 6360 cable?

So far, I have only installed regular doorbells and intercoms and this is completely new territory for me :-)

Best regards, Markus

You need a telephone system that can do that.
How it is connected to both the phone and the doorbell.

The router will be added separately.

I don't remember exactly how the setup is then. The last time I wired such a construct was about 8 years ago :)

The problem is that the phone comes into the house via the router :-) I have only had the case once where someone wanted such a system, so I have never really dealt with it before :-)

I am familiar with the telephone system; you need one so that the front door is recognizable as an extension, but beyond that, I don't really know

Best regards Markus