HP3000-L Archives

November 2001, Week 5

HP3000-L@RAVEN.UTC.EDU

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Subject:
From:
John Pollard <[log in to unmask]>
Reply To:
John Pollard <[log in to unmask]>
Date:
Thu, 29 Nov 2001 14:31:39 -0600
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"Wirt Atmar" <[log in to unmask]>

> Tracy writes and essentially answers his own comment:
>
> > It was mentioned the other week by another and myself
> >  that my sessions in QCTerm have been disconnecting without
> >  apparent reason.
> >
> >  In further experience, I've noticed that this has only
> >  been happening when using QCTerm when using Dial-up
> >  networking with my local ISP.  It hasn't happened yet
> >  when I'm using my NIC card at work and going out through
> >  my company's firewall.
>
> The internet, if it travels over ordinary phone-grade phone lines, as
it does
> from dial-up modems to your ISP, is still subject to all the snaps,
cracks,
> and pops of line noise. Some of these are going to be significant
enough to
> occasionally break the telnet connection. (Q: Why do telephone lines
> occasionally hum? A: They don't know the words.)
>
> Nonetheless, even in these circumstances, I've grown to be very
impressed
> with the resiliency of the internet over phone lines as compared to
the
> "toughness" of the ordinary modem connections that we were using just
a few
> years ago. It wasn't long ago that I used to sit here and curse like a
sailor
> when trying to work on a customer's machine somewhere else in the
country.
> With dial-up PPP or SLIP connections, my level of cursing has dropped
off
> considerably.

Hoping to help clarify: I have used dialup connections to an HP3000
extensively over the past six years.  Mostly using WRQ Reflection with
anywhere from a 28k to a 56k modem and NS/VT.  Not a week goes by that I
do not get disconnected from at least one session - and frequently more.
So it's probably not QCTerm or Telnet, per se.

When this happens, try doing a tracert - I invariably find *extremly*
long ping times from some node, or nodes, in the path.  (Occasionally
that node is the HP3000 itself).

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