Chapter

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 6-3.

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, Software Upgrades.

Step 2 Use an text editor to edit the DistinctiveRinglist.xml file. See the “DistinctiveRingList File Format Requirements” section on page 6-2for information about how to format this file and for a sample 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, 6945, and 6961 Administration Guide for Cisco Unified Communications Manager 8.5 (SCCP and SIP)

 

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Cisco Systems 6921 manual PCM File Requirements for Custom Ring Types, Configuring a Custom Phone Ring