<?xml version='1.0'?>

<reference anchor='RFC0029'>

<front>
<title>Response to RFC 28</title>
<author initials='R.' surname='Kahn' fullname='Robert Kahn'>
<organization>Bolt Baranek and Newman (BBN)</organization></author>
<date month='January' day='19' year='1970' />
<abstract>
<t>A "millisecond" clock should be satisfactory for most network measurements. Round-trip message transit times typically should be at least on the order of tens to hundreds of milliseconds.  The IMP contains a 16-bit hardware clock which is incremented every 100 microseconds to allow for timing of internal events within the IMP, as for example, during tracing.However, most measurements are made using a 25.6 ms. software clock.</t></abstract></front>

<seriesInfo name='RFC' value='29' />
</reference>
