The function can be useful if there is a need to play an advertising audio file instead of background music. You can assign your own file to each queue.
Go to the section "Telephony" -> "Sound files" -> "Music on hold"
Add media files:
After saving the media file, copy its ID from the browser address bar. For example , in a link like "http://192.168.0.41/admin-cabinet/sound-files/modify/5" the identifier is the number 5.
Go to the "System" -> "System file customization"
Open the file "/etc/asterisk/extensions.conf" for editing
Paste the following code at the end of the file:
According to this example, for the queue with the number "2001", a file with the ID 5 will be played in the background, for the queue "2002", a file with the ID 6
