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In the Cisco CallManager Express, when a customized Music on Hold file is used, callers on hold hear loud and garbled music

Core Issue

After a customized Music on Hold (MoH) file is installed on Cisco CallManager Express, when the caller is put on hold, the held caller hears loud and garbled music.

Resolution

In order to resolve this issue, make sure the file format is correct. If the file format is 128 KB 16-bit then the MoH music is garbled. Change the format to 64 KB 8-bit.

Refer to moh (telephony-service) for more information.

Version history
Revision #:
1 of 1
Last update:
‎06-22-2009 06:16 PM
Updated by:
 
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New Member

I have taken the time to document this and feel it woul be beneficial to others

please rate if you find this helpful

Download Audacity ( google it)

open audacity

Change Project to 8000hz (lower left hand corner)

Go to edit and then preferences

Change Uncompressed export format to “ AU (Sun/Next 8:bit ULAW)”

Load audio file

Select a space where someone is not speaking

Go to effect and noise removal

Click get noise profile

Close effect

Select all

Choose effect and noise removal

Click remove noise

Select all

Choose effect and then normalize

Click ok

Select all

Choose effect and then compressor

Change threshold to -42db

Change ration to 10:1

Uncheck normalize

Click ok

Click file

Choose export as au.

Save as “ filename.au”

Upload file to router via tftp

specify the file in CME GUI