Hey,
I see that you are well versed here, I am completely green, the first time I have to deal with the installation of an intercom.
The patient is Elprod Easy (I think such - http://elprod.eu/product/unifon-analogowy-easy-firmy-elprod/).
Would you guys give me some advice on which wires to put into which terminals?
I have available blue, black, white and red.

I would like to ask by the way - does not have any silencing option available to the user? Is it possible to do it in some easy way from the board level?
Greetings!