Other Useful FeaturesBusinessPhone – Dialog 4220 Lite / Dialog 321074Background MusicYou can listen to Background Music over the loudspeaker on yourphone by pressing a pre-programmed Music key, or by entering thenumber for the music channel. Please ask your systemadministrator for the configured number.Ô Press to activate the music (pre-programmed).The music automatically switches off when you make or receivecalls and switches on again when the call is finished.í Press to cancel the music.DoorphoneThe Doorphone is used to monitor the admission to your company,i.e you can open the doorlock from your phone.Answering Doorphone callsu Lift the handset.You will be in speech connection with the calling party.Opening of the doorlockAfter you have answered the Doorphone, you can open the doormaking an inquiry to the door-opener’s directory number.Inquiry Ô Press.z Dial the door-opener’s directory number.Please ask your system administrator for the number.Note: You can also program the door-opener’s directorynumber as a Common Abbreviated Number or a functionkey.Intercom LineA two-way direct call function between two extensions, for instancein executive-secretary communication.BackgroundMusic