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Note In some cases, hum may be reduced or eliminated by using a local power cube or power
injector.
These environmental and hardware inconsistencies in the locations where Cisco Unified IP Phones are
deployed means that there is not a single headset solution that is optimal for all environments.
Cisco recommends that customers test headsets in their intended environment to determine
performance before making a purchasing decision and deploying en masse.
Audio Quality Subjective to the User
Beyond the 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 have been reported to perform well with Cisco Unified IP Phones. See manufacturer’s
sites for details.
For information about wireless headsets that work in conjunction with the wireless headset remote
hookswitch control feature, got to the following URL: http://www.cisco.com/pcgi-bin/ctdp/Search.pl
1. Choose IP Communications from the Enter Solution drop-down list box. The Select a Solution
Category drop-down list box displays.
2. Choose IP Phone Headsets to see a list of Technology Development Program partners.
If you want to search for a particular Technology Development Program partner, enter the partner’s
name in the Enter Company Name box.