28Basic functionsChange the display contrastIn order to adjust the display to on-site illumination/brightness, you can change the contrast. Thesetting can be made in the menu “Display > Contrast”.Handset secrecy buttonIf you do not want the person you are on the phone with to hear what you are saying e.g. to anotherperson in the room, you can momentarily activate the secrecy button.You are in the middle of a conversationD Press . The symbol appears in the display.The person you are talking to on the phone cannot hear what you are saying anymore.When you want to talk to the person again, press the left softkey once more. The person you are onthe phone with can hear what you are saying again.Mute