Serial over LAN (SOL) is a mechanism how to work with the serial ports over IP.
With this Router App (server side) and a suitable client application you can get
a virtual serial port on a computer which mirrors the real serial port on the
router. It is possible both to read data from and write data to serial port. It
can uses raw transfers (only data) or RFC 2217 Telnet Com Port Control (data and
port configuration). You can connect with this app to a management console on a
infrastructure device or PLC etc.