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Cisco 7971G-GE Manual

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Cisco Unified IP Phone 7970G/7971G-GE for Cisco Unified Communications Manager 6.0
OL-12232-01
Chapter 3 Setting Up the Cisco Unified IP Phone
Understanding the Cisco Unified IP Phone 7970 Series Components
In some instances, the mechanics or electronics of various headsets can cause a
remote party to hear a voice echo when speaking to a Cisco Unified IP Phone
user.
Cisco Systems recommends the use of good quality 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 cell phones and two-way radios, some audio noise may still occur.
The primary reason that support of a headset would be inappropriate for an
installation is the potential for an audible hum. This hum can either be heard by
the remote party or by both the remote party and the Cisco Unified IP Phone user.
Some potential humming or buzzing sounds can be caused by a range of outside
sources, for example, electric lights, being near electric motors, large PC
monitors. In some cases, a hum experienced by a user may be reduced or
eliminated by using a local power cube.
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 the party on the far end. Sound is
subjective and Cisco cannot guarantee the performance of any headsets or
handsets, but some of the headsets and handsets on the sites listed below have
been reported to perform well on Cisco Unified IP Phones.
Nevertheless, it is ultimately still the responsibility of customers to test this
equipment in their environments to determine suitable performance.
For information about headsets, refer to:
http://www.vxicorp.com/cisco
http://www.plantronics.com
http://www.jabra.com
Connecting a Headset
To connect a headset to the Cisco Unified IP Phone, plug it into the Headset port
on the back of the phone. Press the Headset button on the phone to place and
answer calls using the headset.
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