Plantronics C620-M User Guide - Page 4

USING YOUR HEADSET Answering/ending/making calls with Microsoft Office Communicator To make a call, simply dial the number via your softphone application. To answer or end a call, press the answer/end button. Adjusting Volume To increase listening volume, press the upper end (+) of the volume button. To decrease listening volume, press the lower end (-). To adjust the listen or speak volume of the Microsoft Office Communicator, please refer to the softphone user documentation. To adjust the speak volume of the audio device on the computer, use the Sound and Audio Device section on the Control Panel. It is recommended that the volume is adjusted on the inline control and not the Windows volume control. Muting a Call TROUBLESHOOTING Problem I cannot hear caller. Callers cannot hear me. Sound in headset is distorted. I can hear echo in headset. Solution • The USB adapter is not set as the default audio device. Use the Audio settings in Windows under Sounds and Audio Devices to select "Plantronics Blackwire C610-M or Blackwire C620-M" as the audio device. • Listening volume is too low. Press the volume up button on the headset. • 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 adapter is not set as the default voice device. Use the Voice settings in Windows under Sounds and Voice Devices to select "Plantronics Blackwire C610-M or Blackwire C620-M" as the voice device. • Lower the listen volume on your softphone until the distortion disappears. • Adjust volume on headset. The other headset I was using to listen to music does not work any more. My headset stops responding to button presses. • The USB 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. • When a PC goes into standby or hibernation, the USB adapter no longer is powered on. Be sure your PC is in an active state. During a call, briefly press the mute button to mute the microphone. When muted, the Mute LED will be lit. To unmute press the button again. 6 7