From owner-freebsd-isdn  Fri Apr  3 01:39:52 1998
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From: Martin Husemann <martin@rumolt.teuto.de>
Message-Id: <199804030853.KAA07271@rumolt.teuto.de>
Subject: Re: i4b-L1-F_ill:What is this?
To: helbig@Informatik.BA-Stuttgart.DE (Wolfgang Helbig)
Date: Fri, 3 Apr 1998 10:53:00 +0200 (MEST)
Cc: hm@hcs.de, freebsd-isdn@FreeBSD.ORG
In-Reply-To: <199804030832.KAA22488@rvc1.informatik.ba-stuttgart.de> from "Wolfgang Helbig" at Apr 3, 98 10:32:50 am
Organization: Crusaders Catering Services Inc.
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> Enabling of the IRQ's and initialization of layer1 *and* layer2 should
> be triggered by isdnd when it is started.

Si!

In other words: nothing should happen to the in-kernel state as long as
/dev/isdn is not openend. This includes: activation of layers 1-4, irq's, 
and everything else.

The alternative is: the stack must handle everything by itself as long as
there is noone listening to /dev/isdn. This includes i.e. deleting call
descriptors in a layer 4 timeout, handling of TEI as Hellmuth suggested
and probably lots of details noone realy likes to look into. A can of worms,
I think.


Martin


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