Pcm File Requirements For Custom Ring Types; Configuring A Custom Phone Ring - Cisco 6921 Administration Manual

Chapter 6 Customizing the Cisco Unified IP Phone

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:
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Configuring a Custom Phone Ring

To create custom phone rings for the Cisco Unified IP Phone, follow these steps:
Procedure
Create a PCM file for each custom ring (one ring per file). Ensure the PCM files comply with the format
Step 1
guidelines that are listed in the
Upload 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 Cisco Unified Communications
Operating System Administration Guide,
Step 2 Use an text editor to edit the DistinctiveRinglist.xml file. See the
Requirements" section on page 6-2
DistinctiveRinglist.xml file.
Step 3 Save your modifications and close the DistinctiveRinglist.xml file.
Step 4 To cache the new DistinctiveRinglist.xml file, stop and start the TFTP service by using Cisco Unified
Serviceability or disable and re-enable the "Enable Caching of Constant and Bin Files at Startup" TFTP
service parameter (located in the Advanced Service Parameters).
Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 8.0 (SCCP)
OL-20851-01
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.
"PCM File Requirements for Custom Ring Types" section on page
Software Upgrades.
for information about how to format this file and for a sample
Creating Custom Phone Rings
"DistinctiveRingList File Format
6-3.
6-3