From: Sam Ravnborg <sam@ravnborg.org>
To: linux-kernel@vger.kernel.org
Subject: Re: ISDN CHANNEL-D
Date: Wed, 16 Jan 2002 23:01:31 +0100 [thread overview]
Message-ID: <20020116230131.B2236@mars.ravnborg.org> (raw)
In-Reply-To: <001d01c19ec5$b6f8f740$d500a8c0@mshome.net> <3C45E95A.2010802@antefacto.com>
In-Reply-To: <3C45E95A.2010802@antefacto.com>; from padraig@antefacto.com on Wed, Jan 16, 2002 at 08:58:02PM +0000
On Wed, Jan 16, 2002 at 08:58:02PM +0000, Padraig Brady wrote:
> AstinusLists wrote:
>
> > Hello every one.
> >
> > I've been earing some rumors, that i am quite sure that are turth about the
> > isdn channel d.
> >
> > As all of u know ( i think ) isdn cards have 3 channels: 2*64 and one time
> > 16 kbs.
> >
> > This last one is called channel D.
> > Channel D is used to dial and to reply to tones and minor stuff like that.
>
> Yes info is passed across the D channel in messages. There is a message
>
> type called User User information that can be passed, but only with and
> associated D channel call type, i.e. you must pay for it.
What the original author refer to is utilising the D-Channel to support
LAPB/X.25 traffic. This is done using a special SAPI=16 value.
I dunno if the ISDN drivers in Linux support this yet.
Charging for the above is operator specific, when I worked with this in the past
the charging was unrealistic high.
Sam
prev parent reply other threads:[~2002-01-16 22:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-16 19:40 AstinusLists
2002-01-16 20:21 ` Kristian
2002-01-16 20:43 ` Rene Rebe
2002-01-16 20:58 ` Padraig Brady
2002-01-16 22:01 ` Sam Ravnborg [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20020116230131.B2236@mars.ravnborg.org \
--to=sam@ravnborg.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®