From owner-freebsd-hackers  Mon Feb  3 00:12:18 1997
Return-Path: <owner-hackers>
Received: (from root@localhost)
          by freefall.freebsd.org (8.8.5/8.8.5) id AAA14572
          for hackers-outgoing; Mon, 3 Feb 1997 00:12:18 -0800 (PST)
Received: from diablo.ppp.de (diablo.ppp.de [193.141.101.34])
          by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id AAA14567
          for <hackers@freebsd.org>; Mon, 3 Feb 1997 00:12:13 -0800 (PST)
Received: from freebie.lemis.de by diablo.ppp.de with smtp
	(Smail3.1.28.1 #1) id m0vrJVZ-000Qa8C; Mon, 3 Feb 97 09:12 MET
Received: (grog@localhost) by freebie.lemis.de (8.8.4/8.6.12) 
       id HAA22553; Mon, 3 Feb 1997 07:52:41 +0100 (MET)
From: grog@lemis.de
Message-Id: <199702030652.HAA22553@freebie.lemis.de>
Subject: Re: bisdn
In-Reply-To: <199702022007.NAA08382@phaeton.artisoft.com> from Terry Lambert at "Feb 2, 97 01:07:39 pm"
To: terry@lambert.org (Terry Lambert)
Date: Mon, 3 Feb 1997 07:52:40 +0100 (MET)
Cc: hackers@freebsd.org (FreeBSD Hackers)
Organisation: 	LEMIS, Schellnhausen 2, 36325 Feldatal, Germany
Phone: +49-6637-919123
Fax: +49-6637-919122
Reply-to: grog@lemis.de (Greg Lehey)
WWW-Home-Page: http://www.FreeBSD.org/~grog
X-Mailer: ELM [version 2.4ME+ PL28 (25)]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-hackers@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

Terry Lambert writes:
>>  Oh really?  Do you get D channels?  What do you do with them?
>
> Basic rate:	2B+D

OK.  Note the second question: what do you do with them?

> US West:	2D+B

Really?  I find that hard to believe.  I suppose the question is
doubly relevant here: What do you do with them?

>>>  Think about what hardware the phone company provides for an ISDN
>>>  user over there, but doesn't provide for an ISDN user over here...
>>
>>  An NT1?  It doesn't do HDLC.
>
> No, but it much more standardized for transport encapsulation than
> what we have over here.
>
> We have places using "ISDN" without NT1 at all.

You still haven't realized the real error of your statement.  D
channels are signalling channels, and they use LAP-D, which bases on
HDLC.

Greg