Thanks for replies regarding the cable. It turns out that our
cable wiring is ok and the AXP firmware expects 9600,8,1,n although
it will display at 9600,7,1,e. Attempts to run 'cu' on the unix
host (which provides the terminal session) at 8bit no parity creates
a session at 8bit odd parity (a longer total frame) which confounds
the AXP. Using 'kermit' instead is the solution for now.
Michael Grigoni
Cybertheque Museum