It's a manufacturer-specific serial protocol--NOT standard. You can find the command reference here: http://www.lantronix.com/pdf/XPort-Pro_CR.pdf http://www.la

It's a manufacturer-specific serial protocol--NOT standard. You can find the command reference here: http://www.lantronix.com/pdf/XPort-Pro_CR.pdf http://www.lantronix.com/pdf/XPort-Pro_CR.pdf But, if you're really interested in internet-enabling a new product, you'd likely be better off selecting a microcontroller with built-in Ethernet (or an Arduino with Ethernet shield, if prototyping). In my experience, products like the XPort were better for manufacturers looking to internet-enable a legacy device with a free serial port.