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External Devices
We recommend that you use good-quality external devices that are shielded against unwanted radio frequency
(RF) and audio frequency (AF) signals. External devices include headsets, cables, and connectors.
Depending on the quality of these devices and their proximity to other devices, such as mobile phones or
two-way radios, some audio noise may still occur. In these cases, we recommend that you take one or more
of these actions:
•
Move the external device away from the source of the RF or AF signals.
•
Route the external device cables away from the source of the RF or AF signals.
•
Use shielded cables for the external device, or use cables with a better shield and connector.
•
Shorten the length of the external device cable.
•
Apply ferrites or other such devices on the cables for the external device.
Cisco cannot guarantee the performance of external devices, cables, and connectors.
In European Union countries, use only external speakers, microphones, and headsets that are fully compliant
with the EMC Directive [89/336/EC].
Caution
Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide
19
External Devices
Summary of Contents for IP Phone 6841
Page 15: ...P A R T I About the Cisco IP Phone Cisco IP Phone Hardware page 3 Technical Details page 11 ...
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Page 34: ...Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide 20 External Devices ...
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Page 79: ...P A R T III Phone Accessories Cisco IP Phone Accessories page 67 Wall Mount Kit page 71 ...
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Page 84: ...Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide 70 Headsets ...
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