Before you can use a prerecorded audio file as an announcement, it must be imported using the Lync Server Management Shell. To import a file, first store the content in a temporary variable:
$MyAudioFile = Get-Content <File path and name> -ReadCount 0 -Encoding Byte
Then import the announcement file to the file share using the variable:
Import-CsAnnouncementFile -Parent service:ApplicationServer:<Front End FQDN> -Content $MyAudioFile
Finally, complete the remaining steps:
1. Click Announcement Service.
2. Click Select.
3. Choose an application server in the organization with an audio announcement configured and then click OK.
4. Select an Announcement to be played and then click OK.
5. Click OK again to save the range ...