<?xml version='1.0'?>

<reference anchor='RFC3666'>

<front>
<title>Session Initiation Protocol (SIP) Public Switched Telephone Network (PSTN) Call Flows</title>
<author initials='A.' surname='Johnston' fullname='A. Johnston'>
<organization /></author>
<author initials='S.' surname='Donovan' fullname='S. Donovan'>
<organization /></author>
<author initials='R.' surname='Sparks' fullname='R. Sparks'>
<organization /></author>
<author initials='C.' surname='Cunningham' fullname='C. Cunningham'>
<organization /></author>
<author initials='K.' surname='Summers' fullname='K. Summers'>
<organization /></author>
<date month='December' year='2003' /></front>

<seriesInfo name='BCP' value='76' />
<seriesInfo name='RFC' value='3666' />
<format type='TXT' octets='200478' target='ftp://ftp.isi.edu/in-notes/rfc3666.txt' />
</reference>
