Comelit Okay intercom wiring

[myna]

Hi

I bought an apartment that came with an OLD Comelit Okay intercom.
I want to change it but no idea which wires are doing what.
Anyone here knows the reference of this old intercom and knows which wires do what?

I am attaching 2 pictures of the intercom.

Thanks in advance.

 

[sparkymarka]

Go to “ intercoms r us “ / handset finder it will tell you the most up to date replacement handset …at a guess 2703…

 

[myna]

Hi
Thanks for the reply.
I do not want to find a replacement handset, I want to know on this old one I have, which wire does what.
Myna