Preparation11N Operation guidanceAvailable functions are shown on the bottom of the display. Press the appropriate button for the operation.LThe display varies depending on the operation.Example: When setting a functionPress the button for the function directly above it.Example: To operate “d”, press {VOLUME}.In these Operating Instructions, the button andfunction displayed above are indicated as follows.Press {VOLUME} (d).To hide the guidance that overlaps the image:When the display shows images (for example, during a call and while monitoring), you can temporarilyhide the guidance to easily view the whole image. (See “Hiding the operation guidance” on page 19.)Monitor display (Main monitor station)The following display is an example for description purposes, and it may differ from the actual display.LThe monitor display is turned off during standby.A B EFC DThe displayed function is not stated whenthe corresponding button name meansthe same as the displayed function.A Indicates which door station or sub monitor station iscalling, monitoring, or in a call. Also indicates whichdoor station took the image while viewing it.(Example): Door station 1: Sub monitor station 1B Indicates which door station is calling while talkingor monitoring (page 22).(Example): Door station 2C : Indicates the voice changer mode is on (page19).: Indicates that one of the PBX extensionsconnected to the main monitor station isbeing used for a call from the door station.D Indicates an image is being taken by the doorstation.E Indicates that the “Press-to-talk” mode is on (page20).F Indicates that the door is opened when the dooropener (sold separately) is connected to the mainmonitor station (page 20).