76Data management / SD Card (622d, 632d, 650c with SD card only)Programms a key with access to the SD Card menu.Locating Programs a key with access to the Locating function.Contact your system administrator for more information on thefunctions.Presence Programs a key to call up the Presence feature. For moreinformation on the features themselves, contact your SystemAdministrator.Light Not Aastra 610c , 620d, 630d: Programs a key for switching thedisplay illumination on and off.Bluetooth Assigns the key with access to the Bluetooth menu (not Aastra610d, 612d).Hi-Q audio Aastra 650c only: Programs a key for switching between standardaudio and Hi-Q audio (see page 59).Volume Programs a key with access to the volume setting (theprogrammed key is not identified by a symbol / icon).NoteIf you have reprogrammed the functions from the status they had on delivery, you can access thesefunctions through a number of alternatives.Redial … by pressing the Call key and holding it for a moment.Navigation … by pressing the keys , , ,Key programming