2 Sound in browsers
Overview
For the sounds to be played in Zabbix frontend, Frontend messaging must be enabled in the user profile Messaging tab, with all trigger severities checked, and sounds should also be enabled in the global notification pop-up window.
Sounds, including the default audio clips, are supported in MP3 format only.
The auto play of sounds may be disabled in recent browser versions by default. In this case, you need to change this setting manually.