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From: "John S. Dyson" <toor@dyson.iquest.net>
Message-Id: <199708100028.TAA05009@dyson.iquest.net>
Subject: Re: ISDN drivers/cards
In-Reply-To: <Pine.BSF.3.95q.970809164526.4113A-100000@misery.sdf.com> 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
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> 
> 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