[mod.computers.vax] SET HOST/DTE and Hayes compatible modems

ALAN@FANDM.BITNET.UUCP (04/03/87)

        I got quite a few responses to my question regarding using Hayes
compatible modems with the SET HOST/DTE command.  I also got quite a few
requests for any answers that I got, so I am posting a summary.

        I am told that there is an article in the February 1987 (V1 #9)
issue of "The VAX prfessional" that has about 40 lines of code in it that
will modify the DF03 dial-out code.  Unfortunately, someone in my
department seems to have walked away with that particular issue.  Of
course that person might have been me.  :-)

        The other solution I got was to simply execute the SET HOST/DTE
command and then type in the ATDT command at the keyboard.  This is
probably a satifactory answer for me most of the time.

        As it turns out, the basic problem I was having was a case of
multiple autobauding.  The Hayes compatible modem that I have in smart
enough to autobaud what it gets from either side and decide whether to
talk 110, 300, or 1200 baud.  Because of this I set the terminal line to
autobaud also. This works fine for dial-in, but is not so hot for
dial-out.  What you get is the modem and VAX sitting there autobauding
at each other. Needless to say, my ATDT commands never made it through
to the modem. Once I realised this, I set up a command procedure to
disable autobauding on the line and set it to 1200 baud and then execute
the SET HOST/DTE command, then set it back to autobaud afterward.
Things are working much better now.

        If anyone has gone to the trouble to type in the code from the
VAX professional issue, I would appreciate it if you would send it to
me.  I'm not sure if I will ever find my issue.  Thanks again for all
the responses.

Alan Sutter (ALAN@FANDM.BITNET)
Franklin and Marshall College
Lancaster, PA  17604
(717) 291-4005