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From: BMW6957@TAMCHEM.BITNET.UUCP
Newsgroups: comp.os.vms
Subject: DEMPR and H4000-AB
Message-ID: <8704140550.AA29379@ucbvax.Berkeley.EDU>
Date: Mon, 13-Apr-87 22:12:00 EST
Article-I.D.: ucbvax.8704140550.AA29379
Posted: Mon Apr 13 22:12:00 1987
Date-Received: Wed, 15-Apr-87 04:36:37 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The ARPA Internet
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I'm a planning to install a thin-wire ethernet to extend our existing
baseband ethernet.  While reading the network catalog from DEC, I've
noticed that it does NOT say that the special H4000-BA transceiver
must be used with a DEMPR.  It DOES say that the special transceiver
is required for a DELNI if a DEMPR is attached to it.  An article in
the March 9th "Digital Review" states "...the special H4000-BA transceiver
that the DEMPR requires...".

The network catalog is quite consistent about mentioning an H4000 (no
suffix) when talking about attaching a DEMPR directly to the thick
ethernet and equally as consistent about mentioning a DELNI/DEMPR
combination when talking about the H4000-BA.

I will not be using any DELNI and I'm a little confused.  Does the
DEMPR also require the special H4000-BA, or is Digital Review mistaken?
If not, why does a DELNI require the special transceiver only if it's
connected to a DEMPR?  What have I misread?  Anything?  Any help will
be greatly appreciated.

Brad Wilson
Chemistry Department
Texas A&M University
College Station, TX
BMW6957@TAMCHEM.BITNET