8AL90862USABed01 
 
7.4.3  You can adjust the buzzer/ringer mode according to your needs  
  Press on the ringer/vibrate key. 
  Off: Ringer and buzzer are deactivated. 
  Ring only: Rings only. 
  Vibrate then ring: The handset vibrates and then rings. 
  Vibrate only: The handseibrates anddoesn 't ring. 
  Vibrate and ring: The handset vibrates and rings simultaneously. 
 
This key can be used to switch rapidly from the ringer to the vibrate mode and vice-versa. 
7.5  Activating headset mode  
You can use a headset with your phone. If you want the headset to ring only when receiving an incoming 
call, you must activate the headset mode: 
When activated only the headset rings (if plugged in).