Path: utzoo!attcan!uunet!know!zaphod.mps.ohio-state.edu!rpi!uupsi!sunic!maxim!prc
From: prc@erbe.se (Robert Claeson)
Newsgroups: comp.dcom.modems
Subject: Re: 19200 bidirectional extension to V.32 bis.
Message-ID: <1828@hulda.erbe.se>
Date: 10 Oct 90 15:12:23 GMT
References: <69427@lll-winken.LLNL.GOV> <1895@hayes.uucp> <69515@lll-winken.LLNL.GOV>
Organization: ERBE DATA AB, Jarfalla, Sweden
Lines: 19

In a recent article casey@gauss.llnl.gov (Casey Leedom) writes:

>  Jeeze, and I thought we were having a hard time now finding serial
>interfaces that could go fast enough.  I have a feeling we're going to
>have to go with EIA-422.  (Or is that EIA-423?  What's the one with two
>wires for transmit and two for receive and uses differential voltage
>swings to determine 0/1?  If I remember right it can go up to several
>hundred Kbps ...)

That's EIA 422. EIA 423 is backwards compatible with EIA 232, but when
used with an EIA 423 unit at the other end, it can go up to quite high
speeds as well as to have longer cables than EIA 232. I think that the
specifications says 1000 feet (~330 meters) at 19.2 or 38.4 Kbps.

-- 
Robert Claeson                  |Reasonable mailers: rclaeson@erbe.se
ERBE DATA AB                    |      Dumb mailers: rclaeson%erbe.se@sunet.se
                                |  Perverse mailers: rclaeson%erbe.se@encore.com
These opinions reflect my personal views and not those of my employer.