Cisco CP-7962G Administration Guide - Page 152

Configuring Wideband Codec - replacement

Page 152 highlights

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 List.xml File Format Requirements, page 6-4 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 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. 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 7962G and 7942G) 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 and/or 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 that are described in this administration guide and are registered to this Cisco Unified Communications Manager will advertise G.722 to Cisco Unified Communications Manager. For more information, see the Cisco Unified Communications Manager System Guide, Cisco Unified IP Phones chapter, Codec Usage section. • 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 parameter. If you want to override this on a per-phone basis, choose Enabled or Disabled in the Advertise G.722 Codec parameter on the Product Specific Configuration area of the Phone Configuration window. Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.0 (SCCP and SIP) 6-6 OL-21011-01

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6-6
Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.0 (SCCP and SIP)
OL-21011-01
Chapter 6
Customizing the Cisco Unified IP Phone
Configuring Wideband Codec
Step 4
Use a text editor to edit the List.xml file. See
List.xml File Format Requirements, page 6-4
for the
location of this file, formatting requirements, and a sample file.
Step 5
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 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.
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 7962G and 7942G) 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 and/or 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 that are described in this administration guide and are registered
to this Cisco Unified Communications Manager will advertise G.722 to Cisco Unified Communications
Manager. For more information, see the
Cisco Unified Communications Manager System Guide
, Cisco
Unified IP Phones chapter, Codec Usage section.
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 parameter. If you want to override this on a per-phone basis, choose
Enabled
or
Disabled
in the Advertise G.722 Codec parameter on the Product Specific Configuration area of the
Phone Configuration window.