What is a Virtual Serial Port?

A virtual serial port is a software-based serial port that either does not connect to a hardware-based serial port, or adds functionality to a hardware-based serial port through software extension. Virtual Serial Ports provide a GUI and command-line application control and allow data and signals to be transmitted without any physical null-modem connections and use of DB9 or DB25 connections. A virtual serial port emulates all configuration parameters including baud rate, data bits, parity and stop bits.