Filter
Top Products
9-3
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.5 (SIP)
OL-20861-01
Chapter 9 Customizing the Cisco Unified IP Phone
Creating Custom Phone Rings
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.
Configuring a Custom Phone Ring
To create custom phone rings for the Cisco Unified IP Phone, follow these steps:
Procedure
Step 1 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
“PCM File Requirements for Custom Ring Types” section on page 9-3.
Step 2 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
“Software Upgrades” chapter
in Cisco Unified Communications Operating System Administration Guide.
Step 3 Use an text editor to edit the Ringlist.xml file. See the “Ringlist.xml File Format Requirements” section
on page 9-2 for information about how to format this file and for a sample Ringlist.xml file.
Step 4 Save your modifications and close the Ringlist.xml file.
Step 5 To cache the new Ringlist.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).