<?xml version='1.0'?>

<reference anchor='RFC1328'>

<front>
<title>X.400 1988 to 1984 downgrading</title>
<author initials='S.' surname='Hardcastle-Kille' fullname='Steve Hardcastle-Kille'>
<organization>University College London, Department of Computer Science</organization>
<address>
<postal>
<street>Gower Street</street>
<city>London</city>
<region>England</region>
<code>WC1E 6BT</code>
<country>UK</country></postal>
<phone>+44 71 3807294</phone>
<email>S.Kille@CS.UCL.AC.UK</email></address></author>
<date month='May' year='1992' />
<abstract>
<t>This document considers issues of downgrading from X.400 (1988) to  X.400 (1984),.  Annexe B of X.419 specifies some downgrading rules, but these are not sufficient for provision of service in an environment containing both 1984 and 1988 components.  This document defines a number of extensions to this annexe.</t>
<t>This specification is not tutorial.  COSINE Study 8.2 by J.A.I. Craigie gives a useful overview.</t></abstract></front>

<seriesInfo name='RFC' value='1328' />
</reference>
