Date: Thu, 20 May 1999 11:35:11 +1200 From: "Craig Harding" <crh@outpost.co.nz> To: blitz@pdq.net Cc: stable@freebsd.org, isdn@freebsd.org Subject: Re: ISDN Terminal adapter no work Message-ID: <19990519233544.130B915164@hub.freebsd.org> In-Reply-To: <bulk.40582.19990519095129@hub.freebsd.org>
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Clay Smith wrote:
> This is a multi-part message in MIME format.
>
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Is it really necessary to send HTML versions of your email?
> I have been working on a machine running FreeBSD 3.1-Stable and have
> failed to get the ISDN terminal adapter that is hooked up to it to
> work correctly. There is a generic 56k on com2 that works great.
> On com 1, the ISDN terminal adapter is just...dead. PPP will not
> communicate with it. The terminal adapter has been tested and
> works fine on other machines, just not FreeBSD. Is there
> something special about ISDN adapters that I don't know about?
> (note: the terminal adapter is external and the modem is internal,
> not that that makes a lot of difference as long as the ports are
> set up right in the bios/jumpers)
Most TA's act just like very fast modems. Have you configured PPP to
do all the right initialisation of the TA? It should just require
some AT command strings (including dialing) just like a normal
modem. Most of the Windreck drivers that come with the TAs seem to do
all this config for you automagically, so you won't be aware of
what's required. Often the default config may be with command echoing
and response codes off, so until you tell it otherwise the TA will
act dumb.
The important thing is to get the TA using the right protocol. In my
experience (of a single Zyxel Omninet) the TA supports V.120, X.75,
and PPP. Depending on your ISPs ISDN interface, you may have to use
PPP to get multiple channel bonding. The TA does this weird
semi-PPP mode (I don't know much about the details) where it acts as
an intermediary between your machine and the ISP without PPP on your
machine really knowing it's there. It transparently interfaces
between two channels to the ISP and one channel back to your machine.
-- C.
--
Craig Harding Head of Postproduction, Outpost Digital Media Ltd
"I don't know about God, I just think we're handmade" - Polly
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