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Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 6.1
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Chapter 6 Customizing the Cisco Unified IP Phone
Creating Custom Background Images
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 by using a different name.
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 212 pixels (height).
•
Thumbnail image—80 pixels (width) X 53 pixels (height).
•
Color palette (applies to Cisco Unified IP Phone 7970 Series only)—Includes
up to 12-bit color (4096 colors). You can use more than 12-bit color, but the
phone will reduce the color palette to12-bit before displaying the image. For
best results, reduce the color palette of an image to 12-bit when you create a
PNG file.
Tip
If you are using a graphics program that supports a posterize feature for
specifying the number of tonal levels per color channel, set the number of
tonal levels per channel to 16 (16 red X 16 green X 16 blue = 4096 colors).
Configuring a Custom Background Image
To create custom background images for the Cisco Unified IP Phone, follow
these steps:
Procedure
Step 1
Create two PNG files for each image (a full size version and a thumbnail version).
Ensure the PNG files comply with the format guidelines that are listed in the
“PNG File Requirements for Custom Background Images” section on page 6-6
.
Step 2
Upload the new PNG files that you created to the following subdirectory in the
TFTP server for the Cisco Unified Communications Manager:
/Desktops/320x212x12
Содержание 7970G - IP Phone VoIP
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