I have a new house, I need to install a new intercom system. The system consists of 11 stations inside for which all of these can talk to each other (Back and forth), in addition to two more stations that are what you may call master stations to be installed in the front and back doors. These two stations should be able to call only one dedicated stations from the above 11 units, so that who ever calls from the front & the back doors, he should be replied by one station (say the kitchen). What type of Intercome systems would be possible for this setup? How would I be able to connect them? How many pairs do I need? How much would this system cost me? Bare in mind that the power we use is 220/240 Vac.
I appreciate for your quick response.
Thank you for your kind coop.