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Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.1 (SIP), Cisco Unified IP Phones
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Chapter6 Customizing the Cisco Unified IP Phone
Configuring the Idle Display
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;
conversely, some users may be distracted by the additional sensitivity of G.722.
Two parameters in Cisco Unified CallManager Administration affect whether
wideband is supported for this Cisco Unified CallManager server and/or a specific
phone:
•Advertise G.722 Codec—Choose Cisco Unified CallManager
Administration > System > Enterprise Parameters. The default value of
this enterprise parameter is True, which means that all Cisco Un ified IP
Phone Models 7941G, 7941G-GE, 7961G, 7961G-GE, 7970G, and
7971G-GE that are registered to this Cisco Unified CallManager will
advertise G.722 to Cisco Unified C allManager. If each endpoint in the
attempted call supports G.722 in its capabilites set, Cisco Unif ied CallMan ager
will choose that codec for the call. For more information, see the Cisco
Unified CallManager 5.1 Release Notes.
•Advertise G.722 Codec—Choose Cisco Unified CallManager
Administration > 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.
Configuring the Idle Display
You can specify an idle display that appears on the phone’s LCD screen. The idle
display is an XML service that the phone invokes when the phone has been idle
(not in use) for a designated period and no feature menu is open.
XML services that can be used as idle displays include company logos, product
pictures, and stock quotes.
Configuring the idle display consists of these general steps.
1. Formatting an image for display on the phone.
2. Configure CiscoUnified CallManager to display the image on the phone.