How to make a phone system that will call room to room.?

Question

I want to make a system in my house that will call room to room. (Like at a hotel) I cant find any directions on the web. Please help!

Thanks in advance!

Answer 1

I would probably consider something along the lines of an asterisk solution.

Search for trixbox, its based on asterisk.

Answer 2

look for a Bogen intercom.

Asterix is a good choice.