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echo: locsysop
to: Bill Grimsley
from: Rod Speed
date: 1996-02-14 13:21:52
subject: USR Courier 3/3

(Continued from previous message)

BG> But it DOES, unless the last AT command was ATZ.

And it DOESNT when the last AT command was ATZ and it SHOULD.

BG> Nope, I can't believe that USR aren't aware of that behaviour,
BG> as fixing it would be a trivial exercise in their flash-ROM code.

RS> Well, its far from clear if that ATZ really does
RS> have a problem now. Tho presumably it does.

BG> Yeah, ATZ does not auto-baud the port
BG> rate, which is what I'd expect anyway.

It does actually, and sends the OK back at that speed, and
then mindlessly uses the &W speed for no good reason at all.

RS> Its quite possible that USR is just mindlessly insisting that
RS> thats how they have always done ATZ and they aint gunna change.

BG> USR's use of ATZ is no different from any other modem manufacturer's
BG> though - it simply restores all NVRAM values to the current profile.

I dont believe the other ones do that. The Hayes doesnt, the Supra doesnt,
the Spirit doesnt. I have yet to see any modem do that except a USR.

RS> Still makes no sense whatever to do it that quirky way for
RS> no good reason at all, and there is CERTAINLY no justification
RS> for not documenting that properly in the manual if USR insists
RS> on doing it their own way, different to the vast bulk of modems.

BG> Wish I had a spare Rockwell to play with here, as I'm
BG> not in a position to categorically state how theirs
BG> does an ATZ when the modem's port rate differs from the
BG> term's.  I'd fully expect the same thing to occur though.

Welp, it doesnt on atleast three that I have personally tested.
Including a Hayes.
@EOT:

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