Approximately 80 percent of communications with Sperry systems is
accomplished via 3270 protocols. Available third-party solutions are
Avatar's MacMainFrame and DCA's MacIrma product. The other 20 percent uses
Sperry's UniScope, a modified 3270 protocol. To access these systems,
connect through a protocol converter using a VT100 terminal emulator.
For more details, search the Tech Info Library under "Avatar", "DCA", and
"Sperry".