Plantronics 370 rugged Mode D'Emploi

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Headset Controls
Turn on the headset
Press and hold the call control button until the 
indicator glows blue. You will hear ascending 
tones. 
Turn off the headset
Press and hold the call control button until the 
indicator glows red. You will hear descending 
tones. When power is off, indicator stays off.
Answer a call
Briefly press the call control button.
When you receive a call, your phone may ring 
before your headset rings. Wait until you hear 
the ring in your headset before you press the call 
control button to answer the call.
Reject a call
Press the call control button for 2 seconds.
End a call or cancel  
an outgoing call
Briefly press the call control button.
Make a call
Enter number on your phone, press send, and 
the call is automatically transferred to headset; no 
need to press call control button.
Adjust the volume
Briefly push up or down on the volume button for 
incremental volume steps. You will hear two tones 
(high tone followed by low tone) at the volume limit. 
WARNiNG 
Do not use headphones/headsets at high 
volumes for an extended period of time.  Doing so can 
cause hearing loss. Always listen at moderate levels.  See 
www.plantronics.com/healthandsafety for more information 
on headsets and hearing.