I am trying to connect 5 phones together for an internal (non-phone provider) intercom system. I am trying to get 5 phones to all pick up and be dedicated mic and speaker to the rest of the circuit at the same time.
I have been successful with connecting 2 phones together by connecting the Line-in/out jack to the other phone jack and applying 12VDC between one of the wires (green), and having the other (red) wire be directly connected with no connection to the power (it gets it through the phones).
My thought process and confusion:
Issue I am running into is the theory behind the circuit once more phones are introduced. All the red wires need to be connected to the other red wires; however, the green wires need to have a connection to the rest of the green wires- and still be on the same circuit, to me it is not logical. I cant connect power the red as it will short out.
How would I connect 5 phones together to all be hot-linked-direct-wired to the other phones. I dont need tones, ring, etc just pick up and talk for room to room configuration where the user can see the other end, yet separated by a piece of sound proof glass.
I have been successful with connecting 2 phones together by connecting the Line-in/out jack to the other phone jack and applying 12VDC between one of the wires (green), and having the other (red) wire be directly connected with no connection to the power (it gets it through the phones).
My thought process and confusion:
Issue I am running into is the theory behind the circuit once more phones are introduced. All the red wires need to be connected to the other red wires; however, the green wires need to have a connection to the rest of the green wires- and still be on the same circuit, to me it is not logical. I cant connect power the red as it will short out.
How would I connect 5 phones together to all be hot-linked-direct-wired to the other phones. I dont need tones, ring, etc just pick up and talk for room to room configuration where the user can see the other end, yet separated by a piece of sound proof glass.