Assuming your jukebox is successfully connected to the internet and is communicating with the TouchTunes' servers, you can perform many operations remotely!  To pause/unpause, turn on/off, reboot or perform a 'call now' on a jukebox remotely, go to Locations > Technical > Hardware > Tools.  
 
The buttons here will allow you to remotely manage your jukebox.  Please note that it can take a moment for the command to reach the jukebox.  You can navigate back to your Home page > Live Route to monitor the status of the jukebox after using one of these tools.