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Notes:
Once the MOH file is deleted, there are two ways to recover the music files.
• Users could download the MOH file from this link:
https://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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