[comp.protocols.ibm] 3270 Emulation

jon@runxtsa.runx.oz.au (Jonathon Seymour) (03/11/90)

What is involved in getting an amiga to behave like an IBM 3270 terminal?

Is special hardware necessary or can the emulation be performed with 
appropriate software alone?

The connection will be a direct connection to a network controller - not a 
phone connection.

jon.

sirotto@oak.circa.ufl.edu (Mike Cerrato) (10/31/90)

	I am trying to TELNET to an IBM mainframe with a TELNET program called
TN3270.  It is supposed to tell the mainframe what kind of terminal I am using. 
I have a terminal program for my computer that is VT100 compatilbe, but the
mainframe I am getting on to has no keymap for a VT100.  When the mainframe
puts "MORE .." in the lower right hand corner, I am stuck because I don't have
the button to go on.  What button on a 3270 goes on and what ASCII sequence
does it send.  I think it is the CLEAR button, but I really don't know.  Can
anyone help me???
          ___  __
   /|   /|    /  \			Gallent Knight of a rather
  / |  / |   /				large, squarish table someplace
 /  | /  |--<        SirOtto		in the West Panhandle of Florida.
/   |/   |___\____/

hank@bitnic.BITNET (10/31/90)

        I am trying to TELNET to an IBM mainframe with a TELNET program called
TN3270.  It is supposed to tell the mainframe what kind of terminal I am using.
I have a terminal program for my computer that is VT100 compatilbe, but the
mainframe I am getting on to has no keymap for a VT100.  When the mainframe
puts "MORE .." in the lower right hand corner, I am stuck because I don't have
the button to go on.  What button on a 3270 goes on and what ASCII sequence
does it send.  I think it is the CLEAR button, but I really don't know.  Can
anyone help me???
          ___  __
   /|   /|    /  \                      Gallent Knight of a rather
  / |  / |   /                          large, squarish table someplace
 /  | /  |--<        SirOtto            in the West Panhandle of Florida.
/   |/   |___\____/

KLENSIN@INFOODS.MIT.EDU (John C Klensin) (11/01/90)

>        I am trying to TELNET to an IBM mainframe with a TELNET program called
>TN3270.  It is supposed to tell the mainframe what kind of terminal I am using.
  Unless this is a very unusual version of the many things called TN3270
or names like that, no.  The only thing it "tells the mainframe" is that
it is a network 327x.  It is up to your host to make the right mapping
for it, and for someone there to tell you what the mappings are.  I hope
that is not a recursive reference.  :-)
  Many, if not most, versions of 3270->telnet programs (the TN3270
family) support their own keymapping programs (on *your* host, not the
mainframe) so the mapping of, e.g., VT100 keys to 3270 keys is variable
from originating host to originating host.

>I have a terminal program for my computer that is VT100 compatilbe, but the
>mainframe I am getting on to has no keymap for a VT100.   'course not.
It speaks 3270 or serial line mode (you don't want to find out about
that), or to a device that speaks 3270.  Unless you telnet to one of
those devices (often called by numbers like 7171), rather than the
mainframe, you are not going to get the remote to speak VT100.

>When the mainframe
>puts "MORE .." in the lower right hand corner, I am stuck because I don't have
>the button to go on.  What button on a 3270 goes on and what ASCII sequence
>does it send.  I think it is the CLEAR button, but I really don't know.  Can
>anyone help me???
   You are, in fact, looking for "CLEAR", and, on a 327x, that is a key
with that label.  The default for at least some versions of TN3270 is
control-Z.  You are going to need several other keys as well--the 12 or
24 PF keys, two PA keys, the key marked "INS", and the key marked
"NewLine" (which is different from "Enter", which is usually bound to
the VT100's "return")--at least.  With CLEAR, you may be able to
experiment, but you will probably find it useful to find either a manual
or a copy of your local mapping table, and read same.
  --john klensin
  Klensin@MIT.EDU
p.s.: Cute signatures and the fact that you don't know how to spell
"gallant" aside, we have no idea who you are, since messages from
IBM-NETS tend to arrive without the author identified in the header.
Many of us prefer to know, by conventional name, email address, and
possibly affiliation, whose questions we are answering.
-------

sirotto@oak.circa.ufl.edu (Mike Cerrato) (11/03/90)

	Thank you for your reply.  I have added my real name, E-mail address
(the real one, not the shortened version the NEWS program puts in the header)
and location in my signature.  I also have another question:

Are the TELNET and FTP commands regular CMS commands or are they hidden inside
something else?  I haven't been able to find them at all.
          ___  __
   /|   /|    /  \			Gallant Knight of a rather
  / |  / |   /				large, squarish table someplace
 /  | /  |--<        SirOtto		in the West Panhandle of Florida.
/   |/   |___\____/

Mike Cerrato         	Internet: SIROTTO%maple.decnet@pine.circa.ufl.edu
University of Florida

hank@bitnic.BITNET (11/03/90)

        Thank you for your reply.  I have added my real name, E-mail address
(the real one, not the shortened version the NEWS program puts in the header)
and location in my signature.  I also have another question:

Are the TELNET and FTP commands regular CMS commands or are they hidden inside
something else?  I haven't been able to find them at all.
          ___  __
   /|   /|    /  \                      Gallant Knight of a rather
  / |  / |   /                          large, squarish table someplace
 /  | /  |--<        SirOtto            in the West Panhandle of Florida.
/   |/   |___\____/

Mike Cerrato            Internet: SIROTTO%maple.decnet@pine.circa.ufl.edu
University of Florida