Plantronics Blackwire C520 - Manual (Page 13)

For Windows Vista and Windows 7 systems
• Go to Control Panel > Sound > Recording tab.
• Highlight your device choice, select the Set Default button and
click OK.
For Mac OS X
• Choose Apple menu > System Preferences and click Sound.
• Click Output, and then select “Internal Speakers” or your device
choice.
My headset stops responding to
button presses. When a PC goes into standby or hibernation, the USB headset no
longer is powered on. Be sure your PC is in an active state.
The "Auto Answer call" function is
not working. Make sure the speaker capsule is placed on your ear so the ear
cup makes good contact with your ear.
Smart Sensors
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