Chapter 6 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—ChooseCisco Unified CallManager Administration > System > Enterprise Parameters. The default value of this enterprise parameter is True, which means that all Cisco Unified 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 CallManager. If each endpoint in the attempted call supports G.722 in its capabilites set, Cisco Unified CallManager will choose that codec for the call. For more information, see the Cisco Unified CallManager 5.1 Release Notes.

Advertise G.722 Codec—ChooseCisco 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 Cisco Unified CallManager to display the image on the phone.

Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.1 (SIP), Cisco Unified IP Phones

 

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Cisco Systems 7970G manual Configuring the Idle Display