From owner-freebsd-isdn Sun Apr 5 11:32:17 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA21287 for freebsd-isdn-outgoing; Sun, 5 Apr 1998 11:32:17 -0700 (PDT) (envelope-from owner-freebsd-isdn@FreeBSD.ORG) Received: from casparc.ppp.net (mail.ppp.net [194.64.12.35]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id LAA21282 for ; Sun, 5 Apr 1998 11:32:09 -0700 (PDT) (envelope-from ernie!bert.kts.org!hm@ppp.net) Received: from ernie by casparc.ppp.net with uucp (Smail3.1.28.1 #1) id m0yLuD3-00298iC; Sun, 5 Apr 98 20:32 MET DST Received: from bert.kts.org(really [194.55.156.2]) by ernie.kts.org via sendmail with smtp id for ; Sun, 5 Apr 1998 19:48:52 +0200 (CEST) (Smail-3.2.0.91 1997-Jan-14 #3 built 1998-Feb-14) Received: by bert.kts.org via sendmail with stdio id for freebsd-isdn@freebsd.org; Sun, 5 Apr 1998 19:45:54 +0200 (CEST) (Smail-3.2.0.94 1997-Apr-22 #7 built 1997-Jul-4) Message-Id: From: hm@kts.org (Hellmuth Michaelis) Subject: Re: Callback with i4b In-Reply-To: <199804041157.NAA01485@rvc1.informatik.ba-stuttgart.de> from Wolfgang Helbig at "Apr 4, 98 01:57:04 pm" To: freebsd-isdn@FreeBSD.ORG (ISDN for BSD) Date: Sun, 5 Apr 1998 19:45:54 +0200 (CEST) Organization: Kitchen Table Systems Reply-To: hm@kts.org X-Mailer: ELM [version 2.4ME+ PL31H (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 Wolfgang Helbig wrote: > > Is anybody successfully using callback with i4b? I have a setup where I > > It works fine with a bisdn machine calling back. > > There seem to be some problems, it *both* i4b-machines are connected to > a PBX instead of directly to an NT from the telecom. I am almost only using callback and calledback and use normal dialing just for test purposes. It doesn't matter if both machines are on a PBX or not or if one is bisdn based or i4b based or any combination of these. AFAIK yet, the problems are based on several things: - isdnd is currently no able to handle simultaneous callins and callouts (the callout for a callback destination goes out on one B channel and before this call is terminated the callback comes in on the other B channel). Changing isdnd to be able to handle this situation is non-trivial. - isdnd's state machine and timing machinery is currently not completely implemented and needs some thinking and cleanup. - there seem to be one or more race condition(s) somewhere in the stack which needs to be found and fixed. hellmuth -- Hellmuth Michaelis hm@kts.org Hamburg, Europe "Those who can, do. Those who can't, talk. And those who can't talk, talk about talking." (B. Shaw) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isdn" in the body of the message