From owner-freebsd-hackers Sat Aug 9 17:28:54 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id RAA22692 for hackers-outgoing; Sat, 9 Aug 1997 17:28:54 -0700 (PDT) Received: from dyson.iquest.net (dyson.iquest.net [198.70.144.127]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id RAA22686 for ; Sat, 9 Aug 1997 17:28:51 -0700 (PDT) Received: (from root@localhost) by dyson.iquest.net (8.8.6/8.8.5) id TAA05009; Sat, 9 Aug 1997 19:28:07 -0500 (EST) From: "John S. Dyson" Message-Id: <199708100028.TAA05009@dyson.iquest.net> Subject: Re: ISDN drivers/cards In-Reply-To: from Tom Samplonius at "Aug 9, 97 04:55:39 pm" To: tom@sdf.com (Tom Samplonius) Date: Sat, 9 Aug 1997 19:28:07 -0500 (EST) Cc: joerg_wunsch@uriah.heep.sax.de, hackers@FreeBSD.ORG, jamil@counterintelligence.ml.org Reply-To: dyson@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL31 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > On Sat, 9 Aug 1997, J Wunsch wrote: > > ... > > Unfortunately, the ISDN landscape in the US is different from Europe. > > Your Telco's didn't even decide for a single switch protocol yet, nor > > do they market ISDN as *I*SDN. In the result, you are left alone to > > NI-1 is standard. I place the blame for non-NI-1 on the switch > manufactures. DMS-100 is close, but not quite. AT&T ISDN is just weird. > I was involved/tracking the various ISDN standards. NI-1 is pathetic, mostly due to the non-AT&T switch manufacturers very lame implementations. Other switch manufacturers have been holding back progress. NI-2 is better, but still not up to the level of AT&T-custom ISDN in a few areas. Features are just beginning to appear that AT&T has had for years. As I have heard, the NT, etc switches still can't deal with new upcoming ISDN standards (and still have quality of implementation issues.) Note that AT&T also does support NI-1 as well as it's own (original, relatively full featured) implementation. John