x3270

X3270 is a terminal emulator designed to duplicate the functions of the IBM 3270 mainframe computer terminal on a computer. Unlike 3270, the emulator does not require you connect the series terminals to the host computer via coax adapter cards. Instead, it can communicate with the mainframe computer via the TN3270 Telnet protocol, which is quite common on the TCP/IP networks.
It is worth mentioning that the simplest method for handling scripts is via the String action that represents arguments of one or double quote strings inserted directly as if you were typing. Speaking of typing, you should know that you have the option to create a custom keymap or even multiple ones. However, take note that for creating separate keymaps, you need to define them in either 3270 or NVT mode.
In the NVT mode, the utility supports both line mode operations and character-at-a-time, options that you can toggle from the menu. While some hosts use the standard ASCII frontend for the initial login, later it switches to the 3270 mode that emulates and ANSI x3.46 terminal. This action takes place until the host places it in the 3270 modes and, in the eventuality that it stops functions like this, it returns to the NVT emulation.