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Cisco Unified IP Video Phone 7985G Administration Guide
OL-8726-02
Chapter 6 Customizing the Cisco Unified IP Video Phone
Creating Custom Phone Rings
This example shows a RingList.xml file that defines two phone ring types:
<CiscoIPPhoneRingList>
<Ring>
<DisplayName>Analog Synth 1</DisplayName>
<FileName>Analog1.raw</FileName>
</Ring>
<Ring>
<DisplayName>Analog Synth 2</DisplayName>
<FileName>Analog2.raw</FileName>
</Ring>
</CiscoIPPhoneRingList>
PCM File Requirements for Custom Ring Types
The PCM files for the rings must meet the following requirements for proper
playback on Cisco Unified IP Phones:
•
Raw PCM (no header)
•
8000 samples per second
•
8 bits per sample
•
uLaw compression
•
Maximum ring size—16080 samples
•
Minimum ring size—240 samples
•
Number of samples in the ring is evenly divisible by 240.
•
Ring starts and ends at the zero crossing.
•
To create PCM files for custom phone rings, you can use any standard audio
editing packages that support these file format requirements.