Additionally, General Dynamics is developing the MUOS User Entry Terminal Waveform software library for future use by radios being developed under the Joint Tactical radio System (JTRS) program.
This can be restated as follows: the program should operate the same, irrespective of its source of input (a file, a pipe, or the terminal) and of its output destination.
If a program (such as a terminal emulator) connects to that port, it will get the stream from the mainframe through the connection. Whatever it sends to the connection will go to the next program...