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From: JPALME@qz.qz.se (Jacob Palme QZ)
Newsgroups: comp.protocols.iso.x400
Subject: DATA Compression and X400 standards
Message-ID: <510312*JPALME@QZ.qz.se>
Date: 28 Oct 90 09:32:25 GMT
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	Relayed; 28 Oct 90 10:13:44+0100

One way of introducing "data compression" into X.400 would be
to introduce a new body part type, e.g. "IA5 compressed according
to compression algorithm X". Conversion between this new body
part and ordinary IA5 would be simple, and would have to be done
when transferring a message into a system which cannot understand
this new body type.

In fact, what I am describing above is actually what we are already
doing in the SuperKOM message system. We do however always transfer
from "compressed IA5" to ordinary "IA5" whenever a message is
transmitted to a non-SuperKOM system, since we do not assume
that any other X.400 system uses compression just now.