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From: chc@murdu.UUCP
Newsgroups: comp.os.vms
Subject: DHU11 problems
Message-ID: <1294@murdu.OZ>
Date: Wed, 2-Sep-87 06:57:04 EDT
Article-I.D.: murdu.1294
Posted: Wed Sep  2 06:57:04 1987
Date-Received: Fri, 4-Sep-87 01:47:09 EDT
Organization: Comp Sci, Melbourne Uni, Australia
Lines: 21
Keywords: DHU11


Is there anyone experiencing difficulties with DHU11 multiplexors
under VMS V4.5?  We have tried a couple and have found that after a
printer connected to one of the ports sends an XOFF to stop further
transmission of data, anywhere from 50 to 100 characters get sent
before the multiplexor honours the XOFF.  This can really upset
some printers that do not have enough space left in their buffer
to accomodate this.  A VMZ32 connected to the same printer will
only send 1 or 2 characters after receiving an XOFF.  We do not
know if the problem is in the DHU11 microcode or in VMS.  Please
mail replies.

Thanks in anticipation,

Chris Chaundy,
University Computing Services,
The University of Melbourne,
Parkville,
Victoria, 3052
Australia
(chris%ucsvc.dn.mu.oz.au@seismo.css.gov)