Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!ukma!tut.cis.ohio-state.edu!ucbvax!ultra.UUCP!wayne
From: wayne@ultra.UUCP (Wayne Hathaway)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: new terminal names
Message-ID: <8904061537.AA00580@lear.ultra.com>
Date: 6 Apr 89 15:37:35 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 31


> >x   IBM-2741

> I love it! The terminal that TELNET GO-AHEAD was designed for isn't
> on the Official Terminal Names list!

As someone who was slightly involved with this issue ( 1/2 :-} ), I'd
like to argue that the TELNET GO-AHEAD was "designed" for half-duplex
HOST operation, not really for a particular terminal (although
admittedly the infamous 2741 was the most common at the time).  That
is, it was the overall IBM philosophy of half-duplex operation with
locked terminals that introduced the need to know when to allow/expect
input, which is all the GO-AHEAD was for.  It made no difference
whether the terminals involved were 2741's, 2740's, 3270's ("modern"
boob tubes), or even ASR33's -- they were ALL driven with the idea
that there was a time for waiting for output and there was a time for
typing input, and the HOST was the one who determined which was which.
The GO-AHEAD was introduced to try to give the host at least a hint as
to how to make this determination (although most implementations did
little actual good).

Of course, all this has become a moot point now that IBM has joined
the rest of the universe with AIX and such.  (Right ...  Try selling
THAT one to the thousands of TSO users sitting at their 3270's right
now with that maddening little "X" shining brightly at the bottom!)

  Wayne Hathaway            
  Ultra Network Technologies     domain: wayne@Ultra.COM
  101 Daggett Drive            Internet: ultra!wayne@Ames.ARC.NASA.GOV
  San Jose, CA 95134               uucp: ...!ames!ultra!wayne
  408-922-0100