Date: Sun, 13 Feb 2000 16:17:25 -0500
From: Jeff Hawkins <[EMAIL PROTECTED]>
Subject: Re: Exhaustive PS\1 Newsgroup Lesson
Hi,
At 09:57 AM 2/13/00 -0500, you wrote:
>> I've finally completed my extremely thorough struggle with learning
>> the limitations and peculiarities of using Net-Tamer V1.11.2X with a
>> 2400 bps modem and an IBM PS\1. It can be done -- but let me explain...
><snip>
>I suspect that your difficulties are not related to NetTamer or the
>computer you're running. The most likely culprit is the 2400bps
>connection speed causing your ISP to abort the data transfer. Many
>ISPs won't even accept a connect attempt at 2400bps anymore -
Yeap! But if they accept the connection then the ISP is probably not
the immediate culprit here!
>I suspect that if you borrowed a 9600bps or 14400bps modem for an
>experiment in the same PS/1, it'd work fine. A strong test that could
>point to your 2400bps modem would be to time your connection from
>the point where the data starts to flow up to the abort point - if it's
>always about the same time period, that'd be a strong indication of
>transfer rate problems.
Keep in mind also that most ISPs now farm out the news server tasks
so the news server could be a couple hops from your comm. server point
also! Hops introduce some transit delays!
>I suggest that if you try a faster modem, it be the internal style.
>Your PS/1 probably has an 8250 or 16450 chip controlling your serial
>port, and medium and fast speed external modems don't generally get
>along with a configuration like that - your connection might abort for
>reasons unrelated to the original cause. An internal modem contains its
>own serial port controller chip, so everything is compatible.
I ran a 33,600 on a 286 with a 8250 so I throttled it back to 19,200 and it
worked well then! At 38,400 it over ran the Uart and lost all kinds of packets
and such.
Most news servers simply give up after a time on a slow connection! A news
server can be very busy and just not have the resources to deal with a real
slow connection so they time out fairly fast! A faster connection will help and
a good connection with few packet losses helps! Sometimes you can hang
up and call back later when traffic between you and the server is lighter and
find you'll have no trouble at all!
It's good to experiment with slow modems and finding the ways to make a
slower system work. You'll be the guy who gets through when others can't
and you'll pickup a lot of info others will never know!
Later,
Jeff Hawkins
---
Monster Highway Information Systems
http://www.monsterhighway.com
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