Virtual Null Modem 2.0.1
Null-modem cable is basically used for communication of two RS-232 "DTE" devices.
To create null-modem connection between the devices you need to use two computers or two serial ports of a single computer connected with null-modem cable. The both methods described above are expensive and difficult because of many reasons. The most reliable way to create null-modem connection is using of virtual serial ports emulated by virtual serial port driver and null-modem cable.
Windows 2000 and above