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From: hes@ecsvax.UUCP (Henry Schaffer)
Newsgroups: comp.dcom.modems
Subject: 18kbs modem
Message-ID: <2507@ecsvax.UUCP>
Date: Wed, 24-Dec-86 11:58:50 EST
Article-I.D.: ecsvax.2507
Posted: Wed Dec 24 11:58:50 1986
Date-Received: Thu, 25-Dec-86 03:35:56 EST
Organization: NC State Univ.
Lines: 16
Keywords: fast(er?)

Racal-Milgo has announced an 18kbps modem for voice grade telephone lines.
(See Dec. 22/30 issue of PC WEEK.)  It is the RM-1822D which includes
Hayes compatible 300/1200/2400, and then a proprietary techniques that
"used 50 percent more of the available capacity of the phone line" and
has an built-in micro to monitor line quality and "automatically adapts
the transmission patterns and speed to the line condition" and can
adjust speed in increments as small as 100 bps.  In the fast mode it
only talks to another one of its type.  It uses a CRC-16 for error detect.
The modem is $2,395 in single quantity.

Has anyone used this?  Does anyone know more about this one?  It looks as
if we're pushing the Shannon limit for a voice grade line (within a factor
of two.)

--henry schaffer  n c state univ
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