http://gns3vault.com The default Gnome Terminal opens all telnet sessions in a new window. You have to click & drag all the windows yourself to the different tabs in a single window. It's really easy to change GNS3 to use Konsole which will automatically open each router in a tab and single window.
Visit our site for the line to type in, Youtube doesn't like the special symbols in it so i'm unable to post it here.