Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!watmath!clyde!caip!seismo!gatech!akgua!akguc!mtune!mtuxo!houxm!mhuxt!mhuxv!mhuxo!gjphw
From: gjphw@mhuxo.UUCP (WYANT)
Newsgroups: net.micro,net.micro.atari16,net.micro.ti
Subject: Optimum transmission speed over telephone lines
Message-ID: <1207@mhuxo.UUCP>
Date: Thu, 3-Jul-86 16:48:41 EDT
Article-I.D.: mhuxo.1207
Posted: Thu Jul  3 16:48:41 1986
Date-Received: Sat, 5-Jul-86 09:03:46 EDT
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 17
Xref: watmath net.micro:14996 net.micro.atari16:1194 net.micro.ti:207


  While considering the purchase of a 1200 baud modem, I began wondering
if there is some optimum data rate for modem operations over the U.S.
telephone lines.  I have seen a few advertisements for 2400 baud modems,
and read mention of 9600 bps modems becoming available.  Where does
the retransmission rate due to lost bits negate the higher data
transmission rate?  What might serve to be the most efficient data rate
using ordinary (unconditioned) telephone lines?  Would the long distance
digital telephone trunks be a more serious limiting factor than local or
short haul analog lines?

  Any suggestions?

                                 Patrick Wyant
                                 AT&T Bell Laboratories
                                 Naperville, IL
                                 *!ihnp4!{mhuxo,ihwld}!gjphw