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Date:      Tue, 24 Jun 1997 14:40:13 +0300 (EEST)
From:      Andrew Stesin <stesin@gu.net>
To:        Adam David <adam@veda.is>
Cc:        Terry Lambert <terry@lambert.org>, freebsd-current@FreeBSD.ORG
Subject:   Re: getty modem control
Message-ID:  <Pine.BSF.3.96.970624142554.380C-100000@trifork.gu.net>
In-Reply-To: <199706232245.WAA26521@veda.is>

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On Mon, 23 Jun 1997, Adam David wrote:

> Sometimes a modem will hang beyond recovery with DTR toggle, or even with
> actual power-on reset (less likely). This is why it is useful to initialise
> on port open, rather than during pre-installation.

	Make sure your DTE lowers DTR for no less than 8 seconds,
	20 seconds is almost bullet-proof. (I had the trouble you
	are describing, occasionally, on dialin access pools here,
	they are on cisco 2511.  `pulse-time 20' interface command
	cured the problem almost totally).  BTW are FreeBSD
	init & getty able to arrange this kind of a delay?

	And if the modem used in a production environment is broken,
	i.e. loses profiles on reset or powercycle,
	it should be replaced -- this is plain cheaper than fiddling
	with it. (That's my opinion, YMMV, sure... ;)
 
> It is undeniably useful to be able to reconfigure the modem by editing a
> parameter file, and have the new settings take effect on the next open.

	I'd doubt this. The only real use for "smart" getty I'm sure
	about is to catch fax calls.  "Dumb" BSD-style getty
	covers 90% of usage patterns, anyway.

Best regards,
Andrew Stesin

nic-hdl: ST73-RIPE





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