<?xml version='1.0'?>

<reference anchor='RFC0660'>

<front>
<title>Some changes to the IMP and the IMP/Host interface</title>
<author initials='D.' surname='Walden' fullname='D. Walden'>
<organization>Bolt Baranek and Newman (BBN), NET</organization></author>
<date month='October' day='23' year='1974' />
<abstract>
<t>In the next few weeks several changes will be made to the IMP software including changes to the IMP/Host software interface as specified in BBN Report No. 1822, Specifications for the Interconnection of a Host and an IMP. These changes come in four areas: a) decoupling of the message number sequences of Hosts; b) Host/Host access control; c) expansion of the message number window from four to eight; and d) provision for messages outside the normal message number mechanism. All changes are backward compatible with possible minor exceptions in timing.</t></abstract></front>

<seriesInfo name='RFC' value='660' />
</reference>
