Teamspeak Support :: How to change the host banner in TeamSpeak 3
Edit Virutal ServerRight click on the Server Name at the top of TeamSpeak and select the option "Edit Virtual Server".
Get More OptionsClick on the "More" button to display the advanced features inside of TeamSpeak 3.
Changing the BannerTo change the Host Banner you'll need to change the "Banner Gfx URL" to the URL of where you banner is hosted. You'll set the link of where the banner sends you under the "URL:" option.