ITEM: CJ1434L

Telnet from 6000 to OS2 box resetting terminal

Desc:
 Would like to have the vt100 or the ansi emulation to
work with telneting from AIX to OS/2 system. Currently, after initiating
the telnet, the terminal (Link MC-80) gets reset by some string
the OS/2 system returns to it. The vt220 emulation work however this work
around is not acceptable.

Action: Running an iptrace from the RS/6000 to the OS/2 system
shows a very slight difference  between the two emulations.
Customer manually echoed each of the initial strings returned from 
OS/2 to the terminal - we find esc-c is causing the reset.

We checked for /E[C characters, but found them in both
the vt220 emulation (which works) and the ansi emulation (which doesn't)
terminfo files as well as vt100 variations(which also fail). 
When we attempt to modify the ansi.ti to match the vt220 terminfo
entries, we still see the reset.  

The trace shows even though the os/2 system has passed as a password 
prompt, his terminal (Link-MC80) has already begun to reset itself, which
eliminates all possible actions from that terminal.

Contacted Link technologies at (800-448-5405), they requested to check 
firmware revision, which turns out to be 1.02 (the latest one).
 Link feels the problem is OS/2 via the RS/6000 is sending a sequence 
terminfo cannot capture.  Anything that makes it past terminfo to 
the screen could cause the crash.
Further  testing with terminfo modification was unsuccesful, advised that
we may be able to capture this reset string with setmaps.

Created an output map file with the following entries

\\x1bc:

and nothing else.  He will need to run "setmaps -l \"
as root.  Then each user that wants this will have to have the
nls module on his tty stack (check with strconf).  Once they do they
will need to run "setmaps -o \".
The setmaps worked, trapping the sequence.




Support Line: Telnet from 6000 to OS2 box resetting terminal ITEM: CJ1434L

Dated: January 1997 Category: N/A

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