How to get USB Printing enabled on Airtel XStream Fiber?

I recently got Airtel XStream Fiber, and their box also has a USB port. But logging in to the settings only shows **FTP Server** option. How can I enable USB Printer service? I had Hathway before and their box could enable it by default (A simple check of the USB print option in the settings page). I know there are other ways to enable Printers on a network but my printer is a bit old school (only has USB, no LAN or WiFI) and it's kept in a different area away from my computer desk. Any help is appreciated.