Liberman Richard A, Bond William C, Soltysiak Edwin J: Method and apparatus for testing teletypewriter terminals. General Datacomm, October 30, 1973: US3769454 (9 worldwide citation)

A method and apparatus are provided for the automatic testing of a data communication terminal and a data communication link to which the terminal is connected. A conventional data set or modem in the terminal to be tested is modified to permit the terminal to be inserted automatically into a test l ...