Reference: http://bhatkoti.com/tag/how-to-download-moh-file-from-cisco-call-manager-5x-6x-7x/

admin:file list activelog mohprep/* ← note * means all files
SampleAudioSource.alaw.wav
SampleAudioSource.g729.wav
SampleAudioSource.ulaw.wav
SampleAudioSource.wb.wav
SampleAudioSource.xml
CiscoMOHSourceReport.xml

Step#4 Download the moh files to a SFTP server
Use a command called “file get activelog mohprep/filename”to download above listed file(s), here is an example:
admin:file get activelog mohprep/ SampleAudioSource.alaw.wav
Enter SFTP server IP: 4.2.2.2 ← SFTP server IP
Enter SFTP username: test
Enter SFTP password: test
That’s all, your file is transferred to the FTP Server and you can use GUI interface to put the file to a new/other call manager publisher.

Simple 60 second Silentfile with a 200 Hz beep every 10 seconds.