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Registering Your Product Online

Visit 

plantronics.com/productregistration 

to register your product online  

so we can provide you with the best possible service and technical support.

Technical Assistance

Visit our Web site at

 plantronics.com/support 

for technical support including frequently 

asked questions, compatibility and accessibility information. The Plantronics Technical 

Assistance Center (TAC) is also ready to assist you. Dial (800) 789-4971.

Table of Contents

Welcome

Welcome to the Plantronics family of headset products. Plantronics provides a wide range of 

products from mission-critical and business-critical applications to personal communications 

and entertainment. For additional information visit our web site at 

plantronics.com

 where 

you can visit our 24/7 support, browse through our knowledge base, chat live or ask a 

question. We also feature a variety of installation tutorials to make set up quick and easy. 

Please refer to the safety information found in the Quick Start Guide for important 

product safety information prior to installation or use of the product.

Features

Package Contents

3

2

  

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  

plantronics.com/healthandsafety

 for more information on headsets and hearing.

Registering your Product Online 

2

Technical Assistance 

2

Package Contents 

3

Features 

3

Powering On 

4

Installing Plantronics Software 

4

Headset Features 

5

Using the Headset 

6

Media Manager 

7

Troubleshooting 

8

  We recommend that you install the Plantronics software. Though your headset will 

operate without it, the software is required in order to use the call answer/end function 

with your Unified Communications application from the inline control. Go to

  

plantronics.com/software

 and click the Software Downloads tab. Follow the instructions 

to download and install the software.

Blackwire C420

Case

Mute/Unmute LED

Volume Up

Answer/End 

Volume Down

Summary of Contents for BLACKWIRE C420

Page 1: ...USER GUIDE Blackwire C420 ...

Page 2: ...to make set up quick and easy Please refer to the safety information found in the Quick Start Guide for important product safety information prior to installation or use of the product Features Package Contents 3 2 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 plantronics com healthandsafet...

Page 3: ...Plantronics Control Panel from the Windows Start Programs menu The Plantronics Control Panel screen will let you view status change device parameters set preferences etc Software Update Manager All software for your Plantronics device can be remotely updated if and when updates are available Start Plantronics Update Manager from Windows Start Programs menu to change settings such as automatic or m...

Page 4: ...ftphone s user guide for additional features available while on hold Pressing the answer end button again will take the call off hold Media Manager Plantronics software provides user selectable options to manage the output to your headset from supported media players when a call comes in and when it ends The Media Player feature is in the Preferences tab of the Plantronics Control Panel Select Sta...

Page 5: ...nds and Audio Devices to change the device used for audio 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 My headset does not work with the headset I am using on my PC I cannot answer or disconnect from the headset call button Check compatibility list on plantronics com software t...

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