bas%athens.tmc.edu@iex.iex.com (Brad Simmons) (04/09/90)
Your terminal was designed to work with AT&T's LADT (Local Area Data Transport) videotex service. This service was put into commercial service in Florida, with the Knight Ridder newspaper chain supplying the database, from about late 1982 till sometime in 1984(?) (it's been a long time ;-). There were two versions of the terminal: one that had a built in 9600 baud limited distance modem (for data on top of voice that allowed both the customer's voice connection and data connection to be sharing the same phone line), and one with a built in 1200 baud modem. In either case they were designed to talk to proprietary terminal concentrators located in the Central Office. To the best of my somewhat foggy rememberance at this point, there is no compatibility of this terminal with any existing commercial modem standards.