Configuring Wideband Codec - Cisco 7911G - IP Phone VoIP Administration Manual

Configuring Wideband Codec

Step 4
Step 5
Step 6
Configuring Wideband Codec
Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 6.0
6-8
Use a text editor to edit the List.xml file. See the
Requirements" section on page 6-5
requirements, and a sample file.
Save your modifications and close the List.xml file.
When you upgrade Cisco Unified Communications Manager, a default
Note
List.xml file will replace your customized List.xml file. After your
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.
To cache the new List.xml file, stop and start the TFTP service by using
Cisco Unified Communications Manager 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).
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 connects 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—Choose Cisco Unified Communications Manager
•
> 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, and
7971G-GE that are registered to this Cisco Unified Communications
Chapter 6 Customizing the Cisco Unified IP Phone
"List.xml File Format
for the location of this file, formatting
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