Changing the time on a Siemens HiCom
Office 100 Series


WITH A DISPLAY HANDSET PLUGGED INTO THE FIRST EXTENSION (USUALLY 20 OR 200)

  1. Press Service
  2. Press Hold
  3. Dial 756
  4. Press Service
  5. Dial 9 * 04 *
  6. Dial the hours (00-23) followed by *
  7. Dial the minutes (00-59) followed by *
  8. Lift and replace the handset