Headset specifications, Troubleshooting for .audio 920 – Plantronics .Audio 920 User Manual
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hEAdSET SPECiFiCATiONS
Talk time*
Battery enables up to 8 hours
Standby time*
Battery enables up to 180 hours
Charge time
2 hours for full charge
Range
Up to 33 feet (10 metres)
Headset weight
16 grams
Power requirements
Battery type
Lithium ion polymer
Storage/
Usage Temperature
50F–104F (10C – 40C)
Version
Bluetooth 2.0
Bluetooth Profiles:
Headset Profile (HSP) for talking on the phone.
Hands-free Profile (HFP) for talking on the phone and operating 
the phone.
* Performance may vary by device. Headset can last up to four days without charging, based on 
average talk time of 1.5 hours per day.
TrOuBLEShOOTiNg FOr .AudiO 920
Problem
Solution
My headset does not work 
with the internet calling ap-
plication I am using on my PC. 
(I cannot answer or disconnect 
from the headset call button).
Check compatibility list on www.plantronics.com/personocall to 
ensure your internet calling application is compatible for remote 
answer and  
disconnect.
Headset battery needs to be charged. See page 5.
Headset is not paired to the USB Bluetooth adapter. See page 7.
When a PC goes into standby or hibernation, the USB Bluetooth 
adapter no longer is powered on. Be sure your PC is in an active 
state.
Be sure PerSonoCall software is installed 
and running. See page 9.
I’ve plugged in the USB Blue-
tooth adapter but my headset 
does not respond to button 
presses
Headset is not paired to the USB Bluetooth adapter. See page 7.
Headset may be out of range of the USB Bluetooth adapter. Move 
closer to adapter until the headset is within range. Range varies 
with office environment.
When a PC goes into standby or hibernation, the USB Bluetooth 
adapter no longer is powered on. Be sure your PC is in an active 
state.
I’ve installed PerSonoCall and 
the USB Bluetooth adapter but 
the system tray icon shows a 
red X (denoting no connection).
Headset is not paired to the USB Bluetooth adapter. See page 7.
I cannot hear caller.
Headset is not paired to the USB Bluetooth adapter. See page 7.
The USB Bluetooth adapter is not set as the default audio device. 
Use the Audio settings in Windows® under Sounds and Audio De-
vices to select “Plantronics BT Adapter” as the audio device.
Listening volume is too low. Press the volume up button on the 
headset. See page 11
Callers cannot hear me.
Headset is muted. Press the mute button on headset to unmute the 
microphone.
Headset microphone boom aligned incorrectly. Align the headset 
boom with your mouth.
The USB Bluetooth adapter is not set as the default voice device. Use 
the Voice settings in Windows® under Sounds and Voice Devices to 
select “Plantronics BT Adapter” as the voice device.
Sound in headset is distorted. I 
can hear echo in headset.
Lower the listen volume on your internet calling application until the 
distortion disappears.
Adjust volume on headset. See page 11.
The other headset I was using 
to listen to music does not work 
any more.
The USB Bluetooth adapter will set itself as the default audio device 
in Windows®. Use the Audio settings in Windows® under Sounds 
and Audio Devices to change the device used for audio.
