Unfortunately RouterOS doesn't provide commands to write/read the serial port directly. There's also a nasty workaround for sending text out over a serial port. as if it were connected to a physical COM port of your PC.by opening a telnet/ssh session that will get you directly on this device (without having to login to RouterOS first).directly from a RouterOS console or telnet/ssh login (i.e.You can use RouterOS to access another device (like a switch, for example) that is connected through a serial cable I try to sum up those possibilities here. There are other and more advanced uses for serial ports. This is one of the ways to do the basic configuration on your RouterOS device after installation (i.e. On every RouterBoard or other system you will have a RouterOS login prompt on serial0 (the first serial interface). The most obvious (and default) usage is the serial console for RouterOS.
Usage possibilities for serial ports in RouterOS
