From owner-freebsd-isdn Wed Apr 1 02:15:10 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id CAA28793 for freebsd-isdn-outgoing; Wed, 1 Apr 1998 02:15:10 -0800 (PST) (envelope-from owner-freebsd-isdn@FreeBSD.ORG) Received: from hcshh.hcs.de (hcshh.hcs.de [194.123.40.1]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id CAA28788 for ; Wed, 1 Apr 1998 02:15:06 -0800 (PST) (envelope-from hm@hcs.de) Received: from hcswork.hcs.de([192.76.124.5]) (2556 bytes) by hcshh.hcs.de via sendmail with P:smtp/R:inet_hosts/T:smtp (sender: ) id for ; Wed, 1 Apr 1998 12:14:54 +0200 (METDST) (Smail-3.2.0.97 1997-Aug-19 #16 built 1997-Oct-22) Received: by hcswork.hcs.de (Smail3.1.29.0 #12) id m0yKKZK-0000dVC; Wed, 1 Apr 98 12:16 METDST Message-Id: From: hm@hcs.de (Hellmuth Michaelis) Subject: Re: i4b-L1-F_ill:What is this? In-Reply-To: <199804010942.LAA22292@rvc1.informatik.ba-stuttgart.de> from Wolfgang Helbig at "Apr 1, 98 11:42:35 am" To: freebsd-isdn@FreeBSD.ORG (ISDN Mailinglist) Date: Wed, 1 Apr 1998 12:16:29 +0200 (METDST) Reply-To: hm@hcs.de Organization: HCS Hanseatischer Computerservice GmbH X-Mailer: ELM [version 2.4ME+ PL39 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-isdn@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org >From the keyboard of Wolfgang Helbig: > > >From the keyboard of Gary Jennejohn: > > > > > >> xxx_ISAC_IRQ..: RME: Input Buffer Overflow... > > > > > > I see exactly the same thing with a Teles 16.3 card when I boot and _before_ > > > isdnd starts. Once the daemon is running the messages disappear. > > > > Hmm - Gary, i remember we found out that you have got a constant-active > > ("daueraktiv" in german, don't know the english word) S0 bus, perhaps > > this is the cause ?! > > According to Q.921 5.9.3 the max size of the information field is > 260 bytes. Add four bytes (2 bytes address and 2 bytes control) > and you end up with a max size of a D frame of 264 bytes. This is true, but under "normal" circumstances messages are not longer than ~64 bytes. What i was trying to say was: You get an input buffer overflow in case the ISAC irqs are not serviced, which is the case while booting. I don't see this messages, because my S0 bus is quiet during boot. Now _if_ you have an S0 bus which is "daueraktiv"/constantly-active (which is configurable in the exchange) _then_ you have activity going on at boot time where the irq's are not serviced and then the possibility exists, that you get such messages. And, what i know from private conversation with Gary, is, that he seems to have such a constantly-active S0 bus. I have no explanation for the phenomenon that Gary gets the messages until he starts the isdnd. hellmuth -- Hellmuth Michaelis Tel +49 40 559747-70 HCS Hanseatischer Computerservice GmbH Fax +49 40 559747-77 Oldesloer Strasse 97-99 Mail hm@hcs.de 22457 Hamburg WWW http://www.hcs.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isdn" in the body of the message