Newsgroups: comp.sys.apple2
Path: news.weeg.uiowa.edu!news.uiowa.edu!uunet!zaphod.mps.ohio-state.edu!wupost!sdd.hp.com!ux1.cso.uiuc.edu!mp.cs.niu.edu!uxa.ecn.bgu.edu!news.ils.nwu.edu!chauhan
From: chauhan@ils.nwu.edu (Amrit Chauhan)
Subject: Intel 14,400ex -- How Sweet it IS!!
Message-ID: <1992Jul8.030353.10189@ils.nwu.edu>
Sender: usenet@ils.nwu.edu (Mr. usenet)
Nntp-Posting-Host: aristotle.ils.nwu.edu
Organization: The Institute for the Learning Sciences
Date: Wed, 8 Jul 1992 03:03:53 GMT
Lines: 86

Ok, I have done some work with the Intel 14,400 and also had to make a
number of useless calls to long distance sites, like pro-tcc (a ProLine
site running from an Apple IIgs using an Intel 14,400ex), to figure out
how things were working.  So far, the following init string works for all
sites that you're going to communicate w/ at 14,400:
 
AT&F\V3\N4S31=11E0
 
What this does is
 
        1) fetches factory settings
 
        2) enables the *new* result code returns.  What the modem will
           return to the user is the PORT speed, not the actual modem
           connection speed.  I called pro-tcc in ProTERM w/ the OnLine
           speed set at 38400, and when I got the connection w/
           pro-tcc, the result code looked like this:
 
CONNECT 38400
 
           Who would ever have thought this on an Apple IIgs?!
 
        3) Force v.42bis -- I knew pro-tcc had a 14,400 modem
 
        4) set S register 31 to 11.  This is also new to the 14,400ex
           and what it does is sets the maximum baud rate that the
           modem will handle.  This sets it to 14,400...the absolute
           maximum.  Setting it lower will force the modem to make
           connections at the specified speed or lower.
 
        5) Finally, turn off echo.
 
That's what the first test run from ProTERM revealed to me.  Then, I tried
a couple of other things, as in:
 
AT&F\N4S31=11E0
 
The only difference here is that I'm using the regular old result codes
that give details.  So, when I connected to pro-tcc w/ this set, I got:
 
CONNECT 14400/REL-MNP-COMP
 
The absolute fastest this puppy can go!  So, here we have full MNP
levels1-5, and we also have data compression at v.32bis!  This is
incredible stuff folks.  Then, I had to slow myself down a bit and
connected to pro-sol :-)  Pro-sol is the ProLine headquarter computer and
is running w/ a 9600 v.32,v.42,v.42bis modem.  But, the connection speed
was at 9600/REL-MNP-COMP as expected, and the modem returned a post speed
of:
 
CONNECT 38400
 
Now, I didn't expect that, although I really should have...I mean it makes
sense.  But, in a way it doesn't.  What exactly does setting the port
speed to 38400 in ProTERM do?  Are you ever really going to get that kind
of compression speed out of a modem running from ProTERM, or from any
application on a IIgs for that matter?  I suppose I don't really
understand this.  My guess would be that if I set ProTERM's OnLine speed
to 19,200 that these AT\V3 results would be 19200.  That's fine, but can
someone explain exactly what's happening and how setting the OnLine speed
will effect communication?
 
So, other than that, I have to report that I'm glad I bought the 14,400
modem!  I'm still debating on selling the 9600ex, but I don't know how
much that will be worth.  I'd end up losing $200 from what I paid
(actually, what's the going price for a used Intel 9600ex?) and I'd like
to keep it for use w/ the other computer.  Anyway, I thought I'd just ask
some of you what all this means.  I'm not so versed in modem technology,
so help me out.
 
Thanks, and if you're considering a 14,400, then the Intel is definately
the way to go!  Even though you're paying a couple hundred more, the
support from Intel, the quality of the product itself, and the ease of use
are just factors that you have to consider.  Intel is one of the best
companies I have ever delt with...they go out of their way for the
customer, and I regard that highly in a company...as do most people.
 
Well, talk to ya all later.
 
Amrit

-- 
 ```` The Institute for the Learning Sciences @@ Northwestern University ''''
()() chauhan@aristotle.ils.nwu.edu -- Amrit Chauhan  ()() My rolling stone has
()() (708) 467-1976 -- The Zoo                       ()() gathered moss....
()() 1890 Maple Ave.  Evanston, IL  60201            ()()  - Teenage Fanclub