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Date:      Sat, 18 Jul 1998 07:40:41 +0200 (MEST)
From:      Martin Husemann <martin@rumolt.teuto.de>
To:        kuku@gilberto.physik.RWTH-Aachen.DE (Christoph Kukulies)
Cc:        freebsd-isdn@FreeBSD.ORG
Subject:   Re: sometimes ipr0 doesn't send packets - it seems
Message-ID:  <199807180540.HAA02134@rumolt.teuto.de>
In-Reply-To: <199807171420.QAA06221@gilberto.physik.RWTH-Aachen.DE> from "Christoph Kukulies" at Jul 17, 98 04:20:02 pm

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> The usual infamous 'jhs-beep' could be heard, vty6 was showing
> rwth: incoming alert, rwth: call active (ctl 0 , ch 0) etc.
> but no packets. Nothing. Not even a ping to the peer point
> possible.

Just FYI: I've seen this same thing happen randomly (not very often) with an
old bisnd installation. When it happens, the b-channel interrupt handler is
called with the card denying any need for a b-channel interrupt, so the
handler does nothing and returns. (I've watched the interrupt handler with
remote gdb.)

A reboot did not always cure it, same for powercycling. I suspected broken
hardware and replaced the card, but the effect happend again later once.
(First card was a realy new (at that time) Teles S0/16.3, replacement was the
quite old AVM A1 card you send me, Hellmuth. System was a 486.).


Martin

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