From owner-freebsd-isdn Wed Apr 28 22:26:16 1999 Delivered-To: freebsd-isdn@freebsd.org Received: from bubba.whistle.com (s205m7.whistle.com [207.76.205.7]) by hub.freebsd.org (Postfix) with ESMTP id 04C82157E0 for ; Wed, 28 Apr 1999 22:26:07 -0700 (PDT) (envelope-from archie@whistle.com) Received: (from archie@localhost) by bubba.whistle.com (8.9.2/8.9.2) id WAA89582; Wed, 28 Apr 1999 22:26:05 -0700 (PDT) From: Archie Cobbs Message-Id: <199904290526.WAA89582@bubba.whistle.com> Subject: Re: Using An Adtran Express 3000 TA for MPPP In-Reply-To: <371640DE.EC279923@math.udel.edu> from Peter Schwenk at "Apr 15, 99 03:41:18 pm" To: schwenk@math.udel.edu (Peter Schwenk) Date: Wed, 28 Apr 1999 22:26:05 -0700 (PDT) Cc: freebsd-isdn@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL38 (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 Peter Schwenk writes: > I've got an Adtran Express 3000 TA that I'm using for Internet access. > Allegedly it is capable of Multilink PPP. Me being very new to ISDN, I > cannot conceive of how this works. Is the Adtran itself performing the > PPP protocol functions, or is it the (Windows/Mac) software that came > bundled with it? My guess is that the Adtran has the protocol built > into its firmware. But, if this is so, what is the format of the data > that is coming from/to the Adtran via the serial port? > > I'm currently using the Adtran as a "modem" with FreeBSD's userland > PPP. But, it seems like once Multilink PPP was involved the Adtran > would be performing the PPP duties instead of the software. > > It seems that I am unable to use the Adtran for PPP with two combined B > channels with the current software. Am I understanding the situation > correctly? I would prefer to stick with FreeBSD when using the Adtran. What the TA is doing is simply pretending to be a modem. So FreeBSD and whatever PPP code is running on your PC thinks it's a modem, with AT commands and the whole bit. But really it's doing multi-link PPP. It doesn't have a complete PPP stack on it, just enough to "spoof" between the two devices it's talking to. So yes you should be able to do 2 B channels, assuming you send it the right AT commands. -Archie ___________________________________________________________________________ Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isdn" in the body of the message