Cisco CP-7911G Administration Guide - Page 178
Configuring Wideband Codec - replacement
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Configuring Wideband Codec Chapter 6 Customizing the Cisco Unified IP Phone Step 4 Step 5 Use a text editor to edit the List.xml file. See the "List.xml File Format Requirements" section on page 6-5 for the location of this file, formatting requirements, and a sample file. Save your modifications and close the List.xml file. Note When you upgrade Cisco Unified Communications Manager, 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 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 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). 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 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 Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 6.0 6-8 OL11954-01