Specifications

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Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified CallManager Release 4.1, 4.2, 5.0
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Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7921G
Installing the Cisco Unified Wireless IP Phone 7921G
Cisco Unified Wireless IP Phone 7921G Web Pages
You can access the Cisco Unified Wireless IP Phone 7921G web pages to set up
the WLAN settings in the network profile. For a new phone with the factory
default settings, you must use the USB cable to connect the phone to your PC. For
more information and instructions, see
Chapter 4, “Using the Cisco Unified
Wireless IP Phone 7921G Web Pages.”
Network Profile Menu on the Cisco Unified Wireless IP Phone 7921G
You can use the Settings menu on the phone and access the Network Profiles menu
to set up the network configuration and the WLAN configuration. For more
information and instructions, see
Chapter 5, “Configuring Settings on the
Cisco Unified Wireless IP Phone 7921G.”
Using a Headset
Although Cisco Systems performs some internal testing of third-party headsets
for use with the Cisco Unified IP Phones, Cisco does not certify or support
products from headset or handset vendors. Because of the inherent environmental
and hardware inconsistencies in the locations where Cisco Unified IP Phones are
deployed, there is not a single “best” solution that is optimal for all environments.
Cisco recommends that customers test the headsets that work best in their
environment before deploying a large number of units in their network.
In some instances, the mechanics or electronics of various headsets can cause
remote parties to hear an echo of their own voice when they speak to Cisco
Unified IP Phone users.
Cisco Systems recommends the use of good quality external devices, like headsets
that are screened against unwanted radio frequency (RF) and audio frequency
(AF) signals. Depending on the quality of these devices and their proximity to
other devices such as cell phones and two-way radios, some audio noise may still
occur. See the
“Using External Devices with Your Cisco Unified IP Phone”
section on page 3-22 for more information.
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.