Windows XP was the last Windows OS featuring HyperTerminal and could be accessed at Start > Programs > Accessories > Communications > HyperTerminal. IT can send commands through HyperTerminal to make sure the modem is properly connected. IT professionals can also use HyperTerminal to troubleshoot any issues when setting up and using a modem. Windows XP was the last Windows OS featuring the HyperTerminal program. The same program also lets the user troubleshoot modem-related issues on the system by sending some commands.

The HyperTerminal connection can be used to transfer data between the computers, and control the serial ports on the devices or system that also includes scientific tools, radio communication devices, etc. It can also be used for accessing the bulletin board system on another PC. Close the window for the port that you just tested to speed up the testing of the remaining serial ports.The HyperTerminal is a classic software program that lets Windows users set up a dial-up connection with other computers via the internal modem using Telnet. When you can see what you are typing, you know that the COM port is working and you can see which port number the physical serial port is. You can check multiple ports at the same time by opening multiple sessions, putting the loopback adapter on one port, and trying to type into each session. If the loopback test fails, make sure that the serial cable or gender changer that you are using works and that the adapter is in the correct port. The loopback test fails when you cannot see what you are typing.

When the session is open, anything you type into it you should see.

Note: To open a telnet session on the COM port, you need a telnet client like PuTTY or Hyper Terminal.

To find out the COM port number, refer to the following FAQ.

Open a telnet session on the COM port number of the device that you are testing.

If you look closely at the female end, the pins should be numbered.

Take a metal paperclip or wire and cross pins 2 and 3.

If your serial port is not female, convert it by taking a female/female cable or gender changer and plugging it into the serial port.

To check whether or not an RS-232 serial port is working, perform an RS-232 loopback test by doing the following:

Hyperterminal windows 10 serial port