Chapter 6 Customizing the Cisco Unified IP Phone

Configuring Wideband Headset Codec

Note 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 CallManager.

Step 3 Use a text editor to edit the List.xml file. See the “List.xml File Format Requirements” section on page 6-5for the location of this file, formatting requirements, and a sample file.

Step 4 Save your modifications and close the List.xml file.

Note When you upgrade Cisco Unified CallManager, a default 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 CallManager, replace the default List.xml file with your stored copy.

Step 5 To cache the new List.xml file, stop and start the TFTP service by using Cisco Unified CallManager 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).

Configuring Wideband Headset Codec

Users can configure a setting called Wideband Headset in the Audio Preferences

menu on the phone (choose > User Preferences > Audio Preferences> Wideband Headset). This setting is Disabled by default, and should be enabled only if the user’s headset supports wideband.

If Cisco Unified CallManager has been configured to use G.722 (G.722 is enabled by default for Cisco Unified IP Phone Models 7941G, 7941G-GE, 7961G, 7961G-GE, 7970G, and 7971G-GE; other phone models may not support it), and the far endpoint also supports G.722, the call will be connected using the G.722 codec in place of G.711. This occurs regardless of whether the user has enabled a wideband headset, but if the headset is enabled, the headset user may notice

 

Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.1 (SIP), Cisco Unified IP Phones

6-8

OL-11524-01

Page 174
Image 174
Cisco Systems 7970G manual Configuring Wideband Headset Codec