Valcom V-2900 Intercom Door Station

The V-2900 Door Answering Unit provides voice contact from a designated telephone station to a door. When used in conjunction with a door plate speaker, pressing the pushbutton on the door plate will cause the phone to ring (1 second on, 4 seconds off). By answering the call, the system user can converse with the person on the door. (The telephone may also call the door speaker).