Using the Display and Operating Elements15eud-0830/2.0 — I7.6 — 08.2007n Using the expansion key module Office DKBMThe configurable keys of the expansion key module Office DKBM [a] can be operated as all con-figurable keys. In addition, there are the following extensions:• If you remove an Office DKBM or if you modify the order of the connected expansion key-pads, the keys configuration does not change.• The DKBM display contrast applies to all connected Office DKBM expansion key modules.• The display’s backlight setting of the Office DKBM is taken from the phone.Inputn Enters digitsThe digit keys are used to enter the digits 0 to 9.n Enter the lettersYou can also use the digit keys to enter letters and special characters. A number of letters andspecial characters are assigned to each key.To enter letters using the digit keys, you need to be in text mode. The text mode is activatedautomatically if the phone is expecting a text input. You can switch back and forth betweennumber mode and letter mode during your input.Shift key:Allows to switch between the 3 views. Press 1x each to display the next level.LED display:Indicates which level is activated.fi If, for example, you are level 3 of the Office DKBM expansion key moduleand an event occurs on level 1, the event is signalled by the red blinkingLED in position 1.abc-->123 Switching between number mode and letter mode during your input:Press the abc-->123 and 123-->abc Foxkey.