Pcm File Requirements For Custom Ring Types; Configuring A Custom Phone Ring - Cisco 7970G - IP Phone VoIP Administration Manual

Creating Custom Phone Rings

PCM File Requirements for Custom Ring Types

Configuring a Custom Phone Ring

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Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 6.1
6-4
The PCM files for the rings must meet the following requirements for proper
playback on Cisco Unified IP Phones:
Raw PCM (no header)
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• 8000 samples per second
8 bits per sample
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uLaw compression
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Maximum ring size—16080 samples
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Minimum ring size—240 samples
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Number of samples in the ring is evenly divisible by 240.
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Ring starts and ends at the zero crossing.
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To create PCM files for custom phone rings, you can use any standard audio
•
editing packages that supports these file format requirements.
To create custom phone rings for the Cisco Unified IP Phone 7970 Series, follow
these steps:
Procedure
Create a PCM file for each custom ring (one ring per file). Ensure the PCM files
comply with the format guidelines that are listed in the
for Custom Ring Types" section on page
Place the new PCM files that you created to the Cisco TFTP server for each
Cisco Unified Communications Manager in your cluster. For more information,
see the "Software Upgrades" chapter in Cisco Unified Communications Operating
System Administration Guide.
Use a text editor to edit the Ringlist.xml file. See the
Requirements" section on page 6-3
and for a sample Ringlist.xml file.
Save your modifications and close the Ringlist.xml file.
Chapter 6 Customizing the Cisco Unified IP Phone
"PCM File Requirements
6-4.
"Ringlist.xml File Format
for information about how to format this file
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