6. VL-V900 basic operations146.3 Main monitor operations with the lobby station6.3.1 Image viewing screen of the main monitor6.3.2 Monitoring the outside with the lobby station or camera1 Press M N.R If there are multiple devices, select the desired device → .R If a camera is connected to the lobby station, you can alternate monitoring between the lobby station andcamera by pressing or .2 When finished, press M N.Note:R Depending on the composition of the system, monitoring may not be available.6.3.3 Opening entrance doorsWhile talking to a visitor or monitoring with a lobby station or camera, press .6.3.4 Calling extension telephones1 Press M N.2 Select the desired extension telephone.R Up to 4 extension telephones may be displayed.3 Press → .4 When finished, press M N.6.4 System conditions and limitationsPlease note the following system conditions and limitations.R Only one call or monitoring session can be handled at a time.Subsequent calls will disconnect the current call (if the current call has lower priority), or will not be connected (ifthe current call has higher priority).Low priority: MonitoringMedium priority: General calls (lobby station to main monitor, main monitor to PBX extension, etc.)High priority: Emergency callsR All calls and monitoring sessions are disconnected after the pre-programmed "timeout" time elapses.R In order to perform the above operations, optional devices and configuration for those devices are required.Contact your building manager for more information.Image from lobby station Image from camera Status iconsIndicates which lobby station is calling,monitoring, or talking. ("1" indicates thedevice number.)Indicates which camera is monitoring.("1" indicates the device number.)Indicates that the main monitor istalking.Indicates that the main monitor ismonitoring.Camera1 1Lobby111Camera Lobby