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From: ticnj!hutch@tsdiag.ocpt.ccur.com
Newsgroups: comp.dcom.telecom
Subject: Re: Request Info Sources About ISDN
Message-ID: <14891@accuvax.nwu.edu>
Date: 20 Nov 90 11:38:25 GMT
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X-Telecom-Digest: Volume 10, Issue 839, Message 6 of 7


arnold%audiofax.com@mathcs.emory.edu (Arnold Robbins) writes:

> >In article <14447@accuvax.nwu.edu> holos0!wdh@gatech.edu (Weaver
> >Hickerson) writes:

> >>I'm interested in finding what types, if any, of AT bus hardware is
> >>available/in the works for ISDN, as well as simply learning more about
> >>the service.

> >At SuperComm '90 this past spring, AT&T had a huge "booth".  One of
> >the things they showed was an ISDN card for the AT bus.  So, I know it
> >exists.

> I remember seeing on Hayes (the modem people) 800 BBS an announcement
> for their new ISDN Card.  It was going to have full "narrowband"
> (read: present 'standard') ISDN compatibility, and should have been
> introduced by now.  I believe the number to Hayes' BBS is (was?)
> 800-US-HAYES.  Perhaps someone from Hayes reads this and will comment
> on a confirmation, price, etc.

As far as I know there are several AT products available.  I know
about the following AT-BRI cards:

1) AT&T PC/ISDN Interface
	Q.931 (AT&T Standard) signaling on D-Channel
	X.25 on D-channel
	X.25 PAD on D-channel (15 Virtual Circuits)
	DMI Mode 2 on B-channel
	DMI Mode 3 on B-channel

	connection for handset, ISDN telephone
	s/t interface
	MC 68000 based (I think 10Mhz)
	DOS support, developer's toolkit available
	was reviewed in December (maybe November) 1989 PC Magazine

2) AT&T PCTA (Model 1000)
	Q.931 signaling on D-channel (AT&T Standard)
	X.25 with PAD on D-channel (single VC)
	connection for analog phone
	was mentioned in PC week a while back

3) Teleos (forgot the model number PC100?)
	Q.931
	X.25 on D-channel
	V.120 on B-channel

	MC 68000 based (I think 12 Mhz)
	S/T Interface
	attached analog phone
	DOS and UNIX support (UNIX driver comes from Lachman, I believe)

4) Intel PC53
	Q.931
	D and B-channel data (I can't remember specifics)
	Intel 81088 based
	S/T Interface
	attached analog phone
	DOS support

There are a few others besides these, you might want to check Sept 17,
1990 issue of Communications Week and the PC Mag from late 1989 for
more info.  I believe that Hayes and Vadis are no longer supplying
ISDN AT boards as well as Progressive Computing (please correct me if
I'm wrong).

If you have any questions, you can either send me email at
princeton!sinc!hutch (best) or call (after hours but not too late at
609-443-3028).