Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!pcrat!rick
From: rick@pcrat.uucp (Rick Richardson)
Newsgroups: comp.dcom.modems
Subject: Re: SW56 and ISDN for Macintoshes
Keywords: 56KB, ISDN
Message-ID: <1989Oct2.180350.11954@pcrat.uucp>
Date: 2 Oct 89 18:03:50 GMT
References: <1989Sep30.235533.24174@ux1.cso.uiuc.edu>
Reply-To: rick@pcrat.UUCP (Rick Richardson)
Organization: PC Research, Inc., Tinton Falls, NJ
Lines: 27

In article <1989Sep30.235533.24174@ux1.cso.uiuc.edu> garyf@mehlville.UUCP (Gary Faulkner) writes:
>
>I suppose I haven't been ENTIRELY clear about what I am looking for.  I want
>to be able to to X.25 and HDLC at 56KB from a Mac AND ISDN from a Mac.  I 
>don't want a package deal, but I would like info on ANY hardware available
>as well as docs on the software interface to such hardware.

If you don't find a board level solution for the Mac, you can always
go with an AT&T 7500 ISDN terminal adapter.  These puppies with the
right modular option cards can take V.35 sync in/out at 56 or 64 KB.
All thats left is to arrange to create the sync data stream from the Mac,
and the right `cabling' to get the data into V.35 levels and pinout.
The 7500 can also do RS-232 async at 19.2 on one or two serial ports.

The only real drawback is autodialing.  Since the 7500 is ignorant
of what it is you are sending down the 56/64 pipe, it can't interpret
any of it for dialing commands.  Instead, you have to either manually
dial from the front panel, or wire up to the RS366(?) dialer interface.

AT&T's also got an older ISDN voice/data telephone that has a V.35
connector.  Its the 7514.  All dialing is manual with this one.

-- 
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