I hesitate to say much when it's so fuzzy in my memory--these days 2 years
blanks me out pretty badly--but my daughter's Dell had the same problem
(same modem) and as I recall after thrashing with it for the better part of
a month, I finally decided that the problem seems to occur as a result of
the modem being detected and an install attempted before the Conexant
enumerator is installed.

When they get installed in the wrong order, it does just what you described.

I *think* I uninstalled the mess and tried again (one of many retries), not
allowing the modem to install initially, and then when the enumerator gets
installed (I forget what it's called--HCF Modem or some such) you can let it
install the modem.

It worked well enough that when I had to reinstall it the next year she was
back from college, that I was able to do it with only a little fumbling
around. She isn't here, and no longer has the machine anyway, or I'd check
it out.

Hope this is of some use.

Joe
"nonewbie" wrote in message
...
cannot get dun to work with aztech mdp3880-w(u) modem.

installed latest drivers, install went fine. "more info" reported info
from the modem.

When I try to dialout using dun i get : "error 633- modem is not
installed or configured for dialup, double click on the modems icon in
control panel"

When I do the above, it tries to reinstall the modem drivers,even though
they have already been installed.

Tried on of MS's solutions and rebuilt telephon.ini, still no go. Also
did their registry fix for telephon.ini

tried uninstalling and reinstalling drivers and modem still no problem.
Modem now assigned to com3 IRQ 10

in my Dell dimension bios, there is a section for all the irqs where u
set it to either available or reserved, but I was told that this is only
for non-plug and pray modems and I got a message from windows saying
this is plug and pray modem. IRQ is currently marked available in bios.