Path: utzoo!utgpu!watmath!att!rutgers!ucsd!helios.ee.lbl.gov!ncis.tis.llnl.gov!MIRSA.INRIA.FR!Christian.Huitema
From: Christian.Huitema@MIRSA.INRIA.FR (Christian Huitema)
Newsgroups: comp.protocols.iso.x400
Subject: Re: concise format
Message-ID: <8911171359.AA26759@jerry.inria.fr>
Date: 17 Nov 89 13:59:22 GMT
References: <[A.ISI.EDU]17-Nov-89.08:44:14.CERF>
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Binding back from numbers to names is likely to be difficult, as these
numbers are not necessarily hierarchical, e.g. like the x.25 numbers
with their three level hierarchy of country-site-subaddress. There is
such a large fan-out on the second level of the heirarchy that one
cannot apply DNS like navigation algorithms!

On the other hand, if the name of the person is carried in the message,
and if a directory is available, it is possible to check back from that
name, e.g. read the "address" attribute for the name, and compare it
with the value in the message. This will work even if the recipient has
several addresses or if the addresses serve several recipients (just like fax).

Christian