Appendix
Headset indicators
Headset alert tones
One beep  | Headset key tone.  | 
  | 
  | 
One beep every 30 seconds  | Muted headset microphone alert tone.  | 
  | 
  | 
Two quick beeps  | Error alert tone.  | 
  | The volume reaches its minimum or  | 
  | maximum setting.  | 
  | 
  | 
Two rapid beeps every 20 seconds  | Low battery warning.  | 
  | 
  | 
Three rapid beeps  | The headset is being powered on or off.  | 
  | 
  | 
Three rapid beeps every 20 seconds  | Out of range while the headset is on a call.  | 
  | A   | 
  | battery.  | 
Ringer tone  | Incoming call alert tone.  | 
  | 
  | 
Headset lights
Red  | On when the headset is charging in the telephone base.  | 
  | Flashes once every 10 seconds to indicate the battery is low.  | 
  | Flashes three times when the headset is being powered off.  | 
Blue  | On when the headset is fully charged in the telephone base.  | 
  | Flashes once every 10 seconds when the charged headset is in  | 
  | idle mode.  | 
  | Flashes twice every three seconds when the headset is in use.  | 
  | Flashes three times when the headset is being powered on.  | 
  | Flashes four times every four seconds when there is an incoming call.  | 
  | Flashes quickly in blue while being paged.  | 
  | 
  | 
Red and blue  | Flashes quickly and alternately when the headset is trying to register  | 
  | to a telephone base.  | 
  | Flashes slowly and alternately when the headset is not registered.  | 
  | 
  | 
Off  | The headset battery is depleted.  | 
  | The headset has been powered off.  | 
  | 
  | 
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