Cisco 7931G Administration Guide - Page 161
Configuring Wideband Codec
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Chapter 6 Customizing the Cisco Unified IP Phone Configuring Wideband Codec Step 5 To cache the new Ringlist.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 7931G) and if the far endpoint supports G.722, the call connects using the G.722 codec in place of G.711. In this case, 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, some users may prefer the additional sensitivity of G.722. Other users may be distracted by the additional sensitivity of G.722. Note The phone does not support wideband handset. The following parameters in Cisco Unified Communications Manager Administration affect whether wideband is supported for this Cisco Unified Communications Manager server and a specific phone: • Advertise G.722 Codec-Choose Cisco Unified Communications Manager Administration > System > Enterprise Parameters. The default value of this enterprise parameter is True, which means that all Cisco Unified IP Phone Models 7931G, 7941G, 7941G-GE, 7961G, 7961G-GE, 7970G, and 7971G-GE that are registered to this Cisco Unified Communications Manager will advertise G.722 to Cisco Unified Communications Manager. If each endpoint in the attempted call supports G.722 in its capabilities set, Cisco Unified Communications Manager chooses that codec for the call. For more information, see the Cisco Unified Communications Manager 5.1 Release Notes. • Advertise G.722 Codec-Choose Cisco Unified Communications Manager Administration > Device > Phone. The default value of this product-specific parameter is to use the value specified in the enterprise parameter. If you want Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 6.0 OL-12457-01 6-5