Wideband Codec Setup - Cisco 7941G Administration Manual

Wideband Codec Setup

Procedure
Step 1 Create two PNG files for each image (a full size version and a thumbnail version). Ensure the PNG files
comply with the format guidelines that are listed in
on page
Step 2 Upload the new PNG files that you created to the following subdirectory in the TFTP server for the Cisco
Unified Communications Manager:
/Desktops/320x196x4
Note
To upload the files, choose Software Upgrades > Upload TFTP Server File in Cisco Unified Communications
Operating System Administration. For more information, see "Software Upgrades" chapter in Cisco Unified
Communications Operating System Administration Guide.
Note
Step 3
You must also copy the customized images and files to the other TFTP servers that the phone may contact to
obtain these files.
Note
Step 4 Use a text editor to edit the List.xml file. See
of this file, formatting requirements, and a sample file.
Step 5 Save your modifications and close the List.xml file.
Note
Step 6 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).
Wideband Codec Setup
If Cisco Unified Communications Manager has been configured to use G.722 (G.722 is enabled by default
for the Cisco Unified IP Phone) and if the far endpoint supports G.722, the call can connect using the G.722
codec in place of G.711. This situation occurs regardless of whether the user has enabled a wideband headset
or wideband handset, but if either the headset or handset is enabled, 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 headset or 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 Administration affect whether wideband is
supported for this Cisco Unified Communications Manager server or a specific phone:
Cisco Unified IP Phone 7941G, 7941G-GE, 7942G, 7961G, 7961G-GE, and 7962G Administration Guide for Cisco
Unified Communications Manager 9.0 (SCCP and SIP)
166
165.
The file name and subdirectory parameters are case sensitive. Be sure to use the forward slash "/"
when you specify the subdirectory path.
If the folder does not exist, the folder gets created and the files get uploaded to the folder.
Cisco recommends that you also store backup copies of custom image files in another location. You
can use these backup copies if the customized files are overwritten when you upgrade
Cisco Unified Communications Manager.
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.
PNG File Requirements for Custom Background Images,
List.xml File Format Requirements, on page 164
Cisco Unified IP Phone Customization
for the location