[NFBCS] Terminal emulation

Wed Feb 12 17:48:42 UTC 2020

Steve, Tracy didn't say originally that she was doing 3270 emulation. 
There is a hummingbird ssh program. Some of us assumed that is what she 
was talking about, why wouldn't we? Don't scold us for trying to help.

On 2/12/20 10:02 AM, Steve Jacobson via NFBCS wrote:
> Everybody,
> 
> Unless we know that her company supports a mode to support Open SSH or another of these packages mentioned, I am somewhat skeptical that they will work well.  3270 emulation is a very different sort of emulator.  Some of the conversions in the past that used other terminal types didn't implement them completely, but if your company has a 3270 controller that supports other terminal types such as the old DEC VT terminals, I think you are still better off looking specifically for a 3270 emulator.  Jack and Louis, if either of you know that a given solution supports 3270 emulation, that would certainly be helpful.  Generally, a connection to an IBM mainframe is done through a protocol that I believe is called IPSNA.  The exchange is different than standard Linux terminals in that the data exchange occurs at the screen level rather than at a character or a line level.  For example, one can make changes in an editor and fill in fields on a screen but each change doesn't even go to the mainframe until one does something that requires an interaction with the mainframe such as scrolling down to the next screen.  Sometimes in the past when I was able to use a more general terminal emulator, deleting a single character caused the entire screen to be resent which made such systems very unresponsive.  Even if they worked, they did not work that well.  I do not know the specifics of the various GUI interfaces to Linux, though, and maybe there is something that is similar.
> 
> I remember years ago there was a DOS TN3270 program that I was able to get to work pretty well, but we're going back thirty years or so now.  Tracy, I still think trying the Demo of QWS3270 might be worth a try in your case.  If that worked for you, it wouldn't be that expensive and you might mostly have it made.
> 
> I don't mean to seem unwilling to consider other options, but my experience has been less good when I have used other terminal types on an IBM mainframe, and there other some other options that might still work.  I apologize if anything above is incorrect.
> 
> Best regards,
> 
> Steve
> 
> -----Original Message-----
> From: NFBCS <nfbcs-bounces at nfbnet.org> On Behalf Of Tracy Carcione via NFBCS
> Sent: Tuesday, February 11, 2020 12:58 PM
> To: NFB in Computer Science Mailing List <nfbcs at nfbnet.org>
> Cc: Tracy Carcione <carcione at access.net>
> Subject: Re: [NFBCS] Terminal emulation
> 
> I am trying to access an IBM mainframe, and use TSO/ISPF on it.
> I'm a bit unclear about SSH, even after reading about it.  My boss does have PuTTY, and tried getting into the mainframe with it, but he said it showed the screens in a very strange way, with the whole screen on 1 long line, if I understood him right.
> 
> I'll ask him about Open SSH, but it may be the same as PuTTY.  He knows more about this than I do.  I'm basically a mainframe programmer.  The protocols that get me into the mainframe and let me do my job don't mean much to me.
> 
> Steve J has recommended some fonts, but my emulator doesn't have them.
> Tracy
> 
>> Hello Tracy,
>>
>> If you are trying to access a Linux environment, JAWS supports putty
>> and SecureCRT "https://eur05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.vandyke.com%2Fproducts%2Fsecurecrt%2F&data=02%7C01%7C%7Cb32bf66c785f4055234808d7af1c37ad%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637170408036006624&sdata=hG7jvVIdYn83URB25wkPAMjNlh8r3leWtEV9Df%2B9l5I%3D&reserved=0".
>>
>>
>> Regards
>> Louis Maher
>> Phone: 713-444-7838
>> E-mail ljmaher03 at outlook.com
>>
>> -----Original Message-----
>> From: NFBCS <nfbcs-bounces at nfbnet.org> On Behalf Of Tracy Carcione via
>> NFBCS
>> Sent: Tuesday, February 11, 2020 9:40 AM
>> To: nfbcs at nfbnet.org
>> Cc: Tracy Carcione <carcione at access.net>
>> Subject: [NFBCS] Terminal emulation
>>
>> I am really stuck.  Hummingbird works well, so long as I don't type.
>> Once I start typing, according to Jaws, the font goes to no font, and
>> Jaws can't find the cursor.
>> I called Jaws, and they just said to try a bunch of font sizes.  I did
>> that, but it all works the same--typing turns to no font.
>>
>> I asked Jaws if changing the cursor dimensions through the setting
>> center would help, and the gal said no.
>>
>> Hummingbird is what my coworkers are using, and it's so close to
>> working for me, but not close enough.  I guess I'll have to try other
>> software, when I can get someone with admin rights to install a demo copy for me.
>>
>> I'd welcome any ideas more useful than randomly changing fonts.
>> Tracy
>>
>>
>>
>>
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