Cisco 7800 Series Administration Manual page 83

Headsets
Although Cisco Systems performs internal testing of third-party headsets for use with Cisco IP Phones, Cisco
does not certify nor support products from headset or handset vendors.
Note The Cisco IP Phone 7811 does not support a headset.
The phone reduces some background noise that a headset microphone detects, but if you want to further reduce
the background noise and improve the overall audio quality, use a noise cancelling headset.
We recommend the use of good quality external devices; for example, headsets that are screened against
unwanted radio frequency (RF) and audio frequency (AF) signals. Depending on the quality of headsets and
their proximity to other devices, such as mobile (cell) phones and two-way radios, some audio noise or echo
may still occur. Either the remote party or both the remote party and the Cisco IP Phone user may hear an
audible hum or buzz. A range of outside sources can cause humming or buzzing sounds; for example, electric
lights, electric motors, or large PC monitors.
In some cases, use of a local power cube or power injector may reduce or eliminate hum.
Note
Environmental and hardware inconsistencies in the locations where Cisco IP Phones are deployed mean that
no single headset solution is optimal for all environments.
We recommend that customers test headsets in the intended environment to determine performance before
making a purchasing decision and deploy on a large scale.
Related Topics
External Devices, on page 11
Audio Quality
Beyond physical, mechanical, and technical performance, the audio portion of a headset must sound good to
the user and to the party on the far end. Sound quality is subjective, and Cisco cannot guarantee the performance
of any headsets. However, a variety of headsets from leading headset manufacturers are reported to perform
well with Cisco IP Phones.
For additional information, see
accessories.html
http://www.cisco.com/c/en/us/products/unified-communications/uc_endpoints_
Cisco IP Phone 7800 Series for Third-Party Call Control Administration Guide
Headsets
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