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echo: locsysop
to: Bill Grimsley
from: Rod Speed
date: 1996-05-12 20:29:54
subject: failed calls

BG> Anyway Paul, as you profess to be so good at locating
BG> and curing bugs, perhaps you'd care to explain why
BG> I've only ever seen 28800/NONE connects with TML ?

Rather obvious really. The code in USR modems which exhibit that in
some circumstances only does that in some circumstances. Clearly, if
PARTICULAR rom in a Sportster fixes that, it must be fixable by USR.

Think for a moment about when you said the same sort of thing based on
the heaps of modems you tested when working for CHH. What you said was
right, in THAT situation, you didnt see any problem. Boy did you get ONE
HELL of a surprise when you used the Sportster at home with the old rom
calling it tho. Which went away completely when you installed the best rom.

I'm not being snide Bill, you really do want to think this
thru. Coz if you can grasp it, it really does signify a
HELL of a lot about testing in complex fault situations.

BG> I've called heaps of V.34 modems all over Australia (and a
BG> few in the US), and have NEVER seen a non-EC connect anywhere
BG> but on your board. Same with DD as well, now that I think about it.

Yes, but you said the same thing about tests done from CHH too.
And got one HELL of a surprise when you did it from home instead.
And an even bigger one when a new Sportster rom fixed the problem too.

It really is VITAL to grasp what happened then.

BG> So what is peculiar to YOUR situation that could
BG> possibly cause these non-EC connects, I wonder ?

Most likely some particular line characteristic detail which makes
the Courier code have that brain fart when calling a Netcom and
the same problem when calling a Viper, at a much lower frequency.

Which we KNOW that a particular Sportster rom fixes
completely EVEN WITH that line/modem at the other end.

BG> Don't worry, I'm not suggesting that the USR code isn't partly to blame,

Its more useful to recognise that USR clearly can
eliminate the problem, coz the Sportster rom did.
Presumably thats not in the Courier SDL for some reason.

BG> but it does seem odd that it only happens with YOUR M34F and
BG> (very infrequently) YOUR Viper, and so far, with nobody else's.

Well, you dont call anyone elses non USR modems
at anything like the rate you call Pauls.

BG> Poltergeists, perhaps ?

A deficiency in the USR which they obviously know
how to fix if the latest Sportster rom did so.

PARTICULARLY when its primarily USR Couriers
seeing that /NONE when calling Paul now.
@EOT:

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