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Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 6.1
OL-14587-01
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 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—From Cisco Unified Communications Manager
Administration, choose 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.
Advertise G.722 Codec—From Cisco Unified Communications Manager
Administration, choose Device > Phone. The default value of this
product-specific parameter is to use the value specified in the enterprise
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