3 Press M N to call.12.2.3 Opening the door by entering an unlock code1 Press M#N.2 Enter the 4-digit unlock code.3 Press M N.12.3 Main monitor operations with the lobby station12.3.1 Image viewing screen of the main monitorImage from lobby station Image from cameraCamera11LobbyStatus icons1Indicates which lobby station is calling, monitoring, or talking. ("1" indicates the device number.)1Indicates which camera is monitoring. ("1" indicates the device number.)Indicates that the main monitor is talking.Indicates that the main monitor is monitoring.12.3.2 Monitoring the outside with the lobby station or camera1 Press M N.R If there are multiple devices, select the desired device ® .R The images from the device are displayed.R If a camera is connected to the lobby station, you can alternate monitoring between the lobby station andcamera by pressingCamera orLobby .2 When finished, press M N.Note:R Depending on the composition of the system that the VL-V900 lobby station is connected to, monitoring may notbe available.12.3.3 Opening entrance doorsYou can open the entrance door while talking to a visitor or monitoring with a lobby station or camera.To open the entrance door while talking or monitoring, press .12.3.4 Calling extension telephones1 Press M N.2 Select the desired extension telephone.R Up to 4 extension telephones may be displayed.3612. VL-V900 basic operations