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000292_news@columbia.edu _Wed Nov 24 10:32:59 1999.msg
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From: "John K. Picken" <yg473@victoria.tc.ca>
Subject: Re: Modem reset
Date: Wed, 24 Nov 1999 07:04:57 -0800
Organization: Posted via Supernews, http://www.supernews.com
Message-ID: <Pine.GSO.3.95.iB1.0.991124065244.21378C-100000@vtn1>
To: kermit.misc@columbia.edu
On Mon, 22 Nov 1999, Tim O'Shea wrote:
> I have kermit paging me when a problem arises during the overnight batch run
> (This is on AIX). This works fine, but once the pager message is sent, the
> modem isn't set correctly for dial in. I am wondering if the reset is
> restoring to factory defaults, rather than to the power on defaults, and if
> so, how do I change it?
>
The modem reset command (usually) restores the modem to the settings last
stored in NVRAM using (again usually) the AT&W command. On many modems you
can have more than one reset command i.e. ATZ (=ATZ0) and ATZ1; in such a
case ATZ0 would restore the settings saved with AT&W0 while ATZ1 would
restore those saved with AT&W1. On some modems, you can select which of
two (or more) configurations are restored on a default (ATZ) reset using
AT&Yn (might just be ATYn) where n=0 or n=1 etc.
Factory settings are not necessarily the same since, as outlined, the
stored profiles can be modified. Usually, AT&Fn will restore factory
profile number "n".
Generally, power on will perform an ATZ so you should get the profile
stored in NVRAM rather than the factory defaults. But, not all settings
are saved in the profile in all modems eg. my Supra 14.4 works best with
S95 set to 47 but the value is not saved and has to be restored via
software each time I boot the modem. In your case, my guess would be that
the stored profile is not setting (probably) S0 correctly.
All the "usually"s and "probably"s are because there is no real
hard and fast standard for modems.
jkp