Png File Requirements For Custom Background Images; Set Up Custom Background Image - Cisco 7941G Administration Manual

Cisco Unified IP Phone Customization
The following example shows a List.xml file that defines two images. The required Image and URL attributes
must be included for each image. The TFTP URI that is shown in the example is the only supported method
for linking to full size and thumbnail images. HTTP URL support is not provided.
List.xml Example
<CiscoIPPhoneImageList><ImageItem
Image="TFTP:Desktops/320x196x4/TN-Fountain.png"
URL="TFTP:Desktops/320x196x4/Fountain.png"/>
<ImageItem Image="TFTP:Desktops/320x196x4/TN-FullMoon.png"
URL="TFTP:Desktops/320x196x4/FullMoon.png"/>
</CiscoIPPhoneImageList>
The Cisco Unified IP Phone firmware includes a default background image. This image is not defined in the
List.xml file. The default image is always the first image that appears in the Background Images menu on the
phone.

PNG File Requirements for Custom Background Images

Each background image requires two PNG files:
• Full size image—Version that appears on the on the phone.
• Thumbnail image—Version that appears on the Background Images screen from which users can select
Tip Many graphics programs provide a feature that will resize a graphic. An easy way to create a thumbnail
image is to first create and save the full size image, then use the sizing feature in the graphics program to
create a version of that image that is 25% of the original size. Save the thumbnail version with a different
name than the full size image.
The PNG files for background images must meet the following requirements for proper display on the
Cisco Unified IP Phone:
• Full size image—320 pixels (width) X 196 pixels (height)
• Thumbnail image—80 pixels (width) X 49 pixels (height)
If you are using a graphics program that supports a posterize feature for grayscale, set the number of tonal
Tip
levels per channel to 16, and the image will posterize to 16 shades of grayscale.

Set Up Custom Background Image

To create custom background images for the Cisco Unified IP Phone, follow these steps:
an image. The thumbnail image must be 25% of the size of the full size image.
Cisco Unified IP Phone 7941G, 7941G-GE, 7942G, 7961G, 7961G-GE, and 7962G Administration Guide for Cisco Unified
PNG File Requirements for Custom Background Images
Communications Manager 9.0 (SCCP and SIP)
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