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AST RESEARCH TECHNICAL BULLETIN TB-0235 10/10/86
AST-BSC OR AST-SNA (ANY VERSION)
USING 3270 SERIES TEST KEY
AST currently does not support the "TEST KEY", found on most 3270
devices attached to an IBM 3274. The test key is normally used
to ensure that the terminal is communicating with the 3274 via
the coax connection. The AST emulation packages emulate the
terminal (3270 device) as well as the Cluster Controller (3274),
therefore, this key is redundant and not supported.
(REF: Problem Report #4017)