How to enable/disable mobile broadband from terminal?

Example,

nmcli con up id <id> & or nmcli con up uuid <uuid>

'nmcli con list id|uuid <name>'

  'nmcli dev list'


http://www.sakoman.com/GNOME/how-to-control-networkmanger-from-the-command-line.html

http://manpages.ubuntu.com/manpages/oneiric/en/man1/nmcli.1.html

http://askubuntu.com/questions/137815/how-to-enable-disable-mobile-broadband-from-terminal