
| Package Contents | 3 | 
| Features | 4 | 
| 
 | 
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| Setup | 6 | 
| Setup - Handset Lifter (Optional) | 8 | 
| 
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| Charging | 9 | 
| Positioning | 9 | 
| 
 | 
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| Adjusting Fit | 10 | 
| Making/Answering/Ending Calls | 11 | 
| 
 | 
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| Checking Compatibility | 13 | 
| Volume | 14 | 
| 
 | 
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| Headset Controls | 16 | 
| Base Indicator Lights | 17 | 
| 
 | 
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| Troubleshooting | 18 | 
| Subscription | 20 | 
| 
 | 
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| System Reset | 20 | 
| Battery Replacement | 21 | 
| 
 | 
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| Additional Parts (If required) | 22 | 
| Maintenance | 23 | 
| 
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| Technical Assistance | 23 | 
| Regulatory Notices | 23 | 
Visit www.plantronics.com/productregistration to register your CS50/CS55 product online so we can provide you with the best possible service and technical support.
2
Headset and Wearing Options
Headset
Earloops
Headband
Base
| CS55 | CS50 | 
| 
 | 
AC Charger
Telephone Cord
Handset Lifter (Optional)
Additional parts (if required):
Details on page 22.
| 
 | Ringer | Extender Arm | For Nortel i2004 | 
| Handset Lifter | Microphone | with Stabilizers | phones only | 
3