User's Manual Part 2
Firmware Version 1.0.0.1  UCM6200 Series IP PBX User Manual  Page 221 of 320
 Click on   to select music file from local PC and click on   to start uploading. The music file 
uploaded has to be 8 KHz Mono format with size smaller than 5M. 
 Click on 
  next to the sound file to delete it from the selected Music On Hold Class. 
  Select the sound files and click on 
 to delete all selected music on 
hold files. 
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  Note: 
Once the MOH file is deleted, there are two ways to recover the music files. 
  Users could download the MOH file from this link: 
http://downloads.asterisk.org/pub/telephony/sounds/releases/asterisk-moh-opsound-wav-2.03.tar.gz 
After downloading and unzip the pack, users could then upload the music files to UCM.   
  Factory reset could also recover the MOH file on the UCM. 
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