<?xml version='1.0'?>

<reference anchor='RFC2331'>

<front>
<title abbrev='IP over ATM Signalling - SIG 4.0 Update'>ATM Signalling Support for IP over ATM - UNI Signalling 4.0 Update</title>
<author initials='M.' surname='Maher' fullname='M. Maher'>
<organization>UCS/ISI</organization>
<address>
<email>maher@isi.edu</email></address></author>
<date month='April' year='1998' />
<area>Internet</area>
<keyword>asynchronous transfer mode</keyword>
<keyword>ATM</keyword>
<abstract>
<t>
   This memo describes how to efficiently use the ATM call control

   signalling procedures defined in UNI Signalling 4.0 [SIG40] to

   support IP over ATM environments as described in RFC 2225 [LAUB98]

   and in RFC 2332 [LUC98].  Among the new features found in UNI

   Signalling 4.0 are Available Bit Rate signalling and traffic

   parameter negotiation.  This memo highlights the features of UNI

   Signalling 4.0 that provide IP entities capabilities for requesting

   ATM service in sites with SVC support, whether it is private ATM or

   publicly provisioned ATM, in which case the SVC support is probably

   configured inside PVPs.
</t>
<t>


   This document is only relevant to IP when used as the well known

   "best effort" connectionless service. In particular, this means that

   this document does not pertain to IP in the presence of implemented

   IP Integrated Services.  The topic of IP with Integrated Services

   over ATM will be handled by a different specification or set of

   specifications being worked on in the ISSLL WG.

</t>
<t>

   This specification is a follow-on to RFC 1755, "ATM Signaling Support

   for IP over ATM", which is based on UNI 3.1 signalling [UNI95].

   Readers are assumed to be familiar with RFC 1755.
</t></abstract></front>

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