Configuration (Configure the settings as follows while talking or monitoring.): Touch ® [Sound] or [Display]*1 ® configure the settings that you want to change (see the followingtable).*1 [Sound] and [Display] are not displayed when talking or monitoring with a camera.: ( ) ® configure the settings that you want to change (see the following table).Changing thereceiving volume ofincoming callsTouch [Receiver volume], and then adjust the volume by touching [–] (Quieter)or [+] (Louder).: "Volume" ® ( ) ® : Adjust the volume.Changing the owner’svoice volume (outputto the doorphone)*1Touch [Owner’s voice volume] and then adjust the volume by touching[Quiet] or [Normal].Using voice changer*1Touch [Voice changer] ® [On].: "Voice changer" ® ( )Turning thedoorphone’s LEDlights on or off*1Touch [Illumination], and then touch [On] or [Off].: "Illumination" ® ( ) ® : Select the required setting.Using backlightcompensation fordoorphone images*1Touch [Backlight compensation] and thenadjust the backlight compensation usingeither [–], [Off], or [+].R [–]: use when faces appeartoo bright (makes imagesdarker)R [Off]: turns off backlightcompensationR [+]: use when faces appeartoo dark (makes imagesbrighter): "Backlight" ® ( ) ®: Adjust the backlight compensation.Changing thescreen’s brightnessTouch [Brightness], and then adjust the brightness by touching [–] (Darker) or[+] (Brighter).: "Brightness" ® ( ) ® : Adjust the brightness.*1 Can only be configured when talking or monitoring with a doorphone.9.3 Ringtone settings9.3.1 Ringtone type settingsYou can change the ringtone that is heard when receiving calls from the doorphone or the camera. (The ringtone ofthe intercom call cannot be changed.)– For information about how to configure settings, see page 36 for the main monitor and page 38 for the submonitor.349. Additional functions