If an agent is using a computer running on a Linux operating system and they have audio issues, here are some basic troubleshooting steps.
Step 1 - Restart the computer
Step 2 - Log out of the system and back in.
Step 3 - Make sure your browser is up to date.
Step 4 - Ensure there is no other VOIP Software running in the background.
Step 5 - Clear the cache and cookies.
Step 6 - Use Chrome if other browsers are not working.