Path: utzoo!attcan!uunet!peregrine!ccicpg!cci632!rit!moscom!jgp
From: jgp@moscom.UUCP (Jim Prescott)
Newsgroups: comp.dcom.modems
Subject: Re: PEP still wins over V.32 (was Re: V.32 will dominate the ma
Message-ID: <1306@moscom.UUCP>
Date: 26 Nov 88 04:06:12 GMT
References: <11079@cup.portal.com> <1247@nusdhub.UUCP> <1304@moscom.UUCP>
Reply-To: jgp@moscom.UUCP (Jim Prescott)
Distribution: na
Organization: Moscom Corp., E. Rochester, NY
Lines: 13

In article <1304@moscom.UUCP> jgp@moscom.UUCP (Jim Prescott) writes:
>At 9600 even a 7 window g protocol stalls when the delay is over ~40ms.

Thanks to james@bigtex.cactus.org for pointing out that the 40ms is way off.
At 9600 baud a round trip delay of ~430ms is needed to stall a 7 window g
protocol.  About 140ms for 3 window.

So a modem with spoofing will still be able to provide acks quicker but it
might not make much difference for most calls (although calling via satellite
is sure to slow down the 3 window version).
-- 
Jim Prescott	moscom!jgp@cs.rochester.edu
		{rutgers,ames,harvard}!rochester!moscom!jgp