From owner-freebsd-hackers Sat Jan 13 00:43:34 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id AAA13837 for hackers-outgoing; Sat, 13 Jan 1996 00:43:34 -0800 (PST) Received: from cls.net (freeside.cls.de [192.129.50.1]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id AAA13832 for ; Sat, 13 Jan 1996 00:43:30 -0800 (PST) Received: by mail.cls.net (Smail3.1.29.1) from allegro.lemis.de (192.109.197.134) with smtp id ; Sat, 13 Jan 96 09:43 GMT From: grog@lemis.de (Greg Lehey) Organisation: LEMIS, Schellnhausen 2, 36325 Feldatal, Germany Phone: +49-6637-919123 Fax: +49-6637-919122 Reply-To: grog@lemis.de (Greg Lehey) Received: (grog@localhost) by allegro.lemis.de (8.6.9/8.6.9) id JAA19572; Sat, 13 Jan 1996 09:22:25 +0100 Message-Id: <199601130822.JAA19572@allegro.lemis.de> Subject: Re: Status of ISDN drivers To: terry@lambert.org (Terry Lambert) Date: Sat, 13 Jan 1996 09:22:25 +0100 (MET) Cc: gjennejohn@frt.dec.com, hackers@FreeBSD.org In-Reply-To: <199601122138.OAA20878@phaeton.artisoft.com> from "Terry Lambert" at Jan 12, 96 02:37:59 pm X-Mailer: ELM [version 2.4 PL23] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-hackers@FreeBSD.org Precedence: bulk Terry Lambert writes: > >>> What do you mean by 'sync'? Do you really want to get down to layer >>> 2? In any case, you would only need one board: they handle a complete >>> BRI. >> >> I mean I want to run 8 bit bytes down the line, not 10 bit bytes. :-) >> Clocked serial. Synchronous serial. >> >> I'd also need two cards - I manage both ends of the link, right? :-) >> I wouldn't mind moving the serial load off of freefall anyway. >> A semi-intelligent ISDN card could be stuck into a number of different >> machines at WC. > > I thought you meant you wanted to bond two 56k channels... so he's not > the only one who was confused. I thought he wanted to bond two 64k channels. That's what the card supports. A standard Basic Rate Interface has two 64 kb B channels (for data) and a 16 kB D channel (for signalling). At the risk of repeating myself, many RBOCs can't handle this configuration and chop one bit per byte off the B channel to simulate a D channel, leaving only 56 kb/s bandwidth for the B channels. In another mail, I seriously doubted that the current software would be able to handle this configuration. Greg