Specifications

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Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 8.0
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Chapter 6 Customizing the Cisco Unified IP Phone
Configuring Wideband Codec
Note When you upgrade Cisco Unified Communications Manager, a default List.xml file will replace
your customized List.xml file. After you customize the List.xml file, make a copy of the file and
store it in another location. After upgrading Cisco Unified Communications Manager, replace
the default List.xml file with your stored copy.
Step 6 To cache the new List.xml file, stop and start the TFTP service by using Cisco Unified Serviceability or
disable and re-enable the Enable Caching of Constant and Bin Files at Startup TFTP service parameter
(located in the Advanced Service Parameters).
Custom Background Images for Large Font Locales
Phone background images may not display properly when large font locales such as Chinese, Japanese,
and Korean are used. To modify a background image for proper display, follow these guidelines:
Use the following file sizes when creating PNG files for the Japanese locale:
• 95x28 (full size image)
• 23x8 (thumbnail image)
Upload the image files to %TFTPPATH%\Desktops\95x28x1.
Modify or create the List.xml file in the %TFTPPATH%\Desktops\95x28x1 folder to include the
following lines, where image.png is the name of your image file:
<CiscoIPPhoneImageList>
<ImageItem Image="TFTP:Desktops/95x28x1/image.png"
URL="TFTP:Desktops/95x28x1/image.png" />
</CiscoIPPhoneImageList>
For more information, see Creating Custom Background Images, page 6-3 in the Cisco Unified IP Phone
7906G and 7911G for Cisco Unified Communications Manager Administration Guide.
Configuring Wideband Codec
If Cisco Unified Communications Manager has been configured to use G.722 (G.722 is enabled by
default for the Cisco Unified IP Phone 7970 Series) and if the far endpoint supports G.722, the call can
connect using the G.722 codec in place of G.711. The user may notice greater audio sensitivity during
the call. Greater sensitivity means improved audio clarity but also means that more background noise
can be heard by the far endpoint—noise such as rustling papers or nearby conversations. Even without
a wideband handset, some users may prefer the additional sensitivity of G.722. Other users may be
distracted by the additional sensitivity of G.722.
Two parameters in Cisco Unified Communications Manager affect whether wideband is supported for
this Cisco Unified Communications Manager server and/or a specific phone:
• Advertise G.722 Codec—From Cisco Unified Communications Manager, choose System >
Enterprise Parameters. The default value of this enterprise parameter is True, which means that
all Cisco Unified IP Phone Models 7906G, 7911G, 7941G, 7941G-GE, 7961G, 7961G-GE, 7970G,