Path: utzoo!attcan!uunet!husc6!mailrus!iuvax!pur-ee!j.cc.purdue.edu!mace.cc.purdue.edu!ajq
From: ajq@mace.cc.purdue.edu (John O'Malley)
Newsgroups: comp.sys.mac
Subject: Mac II to mainframe via ISN at 19.2K isn't working!
Summary: A cheap IBM worked!  Is it the Mac's software?
Message-ID: <451@mace.cc.purdue.edu>
Date: 16 Aug 88 17:26:33 GMT
Reply-To: ajq@mace.cc.purdue.edu (John O'Malley)
Organization: Personal Computing Learning Resource Center, Purdue University
Lines: 30


I know that terminal programs were discussed at length some months ago,
but maybe this is a different enough situation to warrant a new discussion.


We've got a Mac SE and a Mac II hooked up to our Unix- and CMS-based mainframes
via an AT&T Integrated Services Network (ISN) line.  The setup runs perfectly 
at 9600 baud using MacKermit 0.9(40) (favorite software) as well as MacTerminal 
2.2 and Red Ryder 9.4.

When we attempted to bounce the ISN box up to 19200 baud, we found that none
of the software worked.  About every 1 out of 3 characters typed in MacKermit
and MacTerminal yield garbage.  I couldn't even get past the password
prompt at login!  Red Ryder 9.4 doesn't have a 19.2Kbaud option, but I 
suspect RR 10.3 does.

Do MacKermit and MacTerminal have reputations for running at 19.2K with
any degree of reliability?  Is better software available that does long-packet
Kermit protocol transfers, reliable vt100 emulation, and 19.2Kbaud speed?

One of my coworkers (an IBM-type person) had a good laugh when we tested
our Mac's ISN line with a lowly IBM Convertible running Kermit-MS at 19.2K, 
and it worked perfectly ... seeming to prove the problem is on the Mac's end.

Any ideas?  Seeing an $800 IBM triumphantly beat a $5000 Mac II wasn't
pleasant!!  Please post responses;  seeing some discussion would be helpful.


John O'Malley         \ Personal Computing       \ Purdue University \ (317)
mace.cc.purdue.edu!ajq \ Learning Resource Center \ Computing Center  \ 494-9944