I've used Startech FTDI based multi-port serial to USB adapters along with a Mikrotik Routerboard to make serial-to-ethernet or serial-to-LTE boxes. The Mikroti

I've used Startech FTDI based multi-port serial to USB adapters along with a Mikrotik Routerboard to make serial-to-ethernet or serial-to-LTE boxes. The Mikrotik boxes expose the serial port on a TCP port for you to connect to. https://imgur.com/a/fdMfjdl https://imgur.com/a/fdMfjdl