RFC 3219 (rfc3219) - Page 1 of 79

Telephony Routing over IP (TRIP)

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Network Working Group                                       J. Rosenberg
Request for Comments: 3219                                   dynamicsoft
Category: Standards Track                                      H. Salama
                                                           Cisco Systems
                                                               M. Squire
                                                       Hatteras Networks
                                                            January 2002


                    Telephony Routing over IP (TRIP)

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2002).  All Rights Reserved.

Abstract

   This document presents the Telephony Routing over IP (TRIP).  TRIP is
   a policy driven inter-administrative domain protocol for advertising
   the reachability of telephony destinations between location servers,
   and for advertising attributes of the routes to those destinations.
   TRIP's operation is independent of any signaling protocol, hence TRIP
   can serve as the telephony routing protocol for any signaling
   protocol.

   The Border Gateway Protocol (BGP-4) is used to distribute routing
   information between administrative domains.  TRIP is used to
   distribute telephony routing information between telephony
   administrative domains.  The similarity between the two protocols is
   obvious, and hence TRIP is modeled after BGP-4.

Table of Contents

   1    Terminology and Definitions  ..............................   3
   2    Introduction  .............................................   4
   3    Summary of Operation  .....................................   5
   3.1  Peering Session Establishment and Maintenance  ............   5
   3.2  Database Exchanges  .......................................   6
   3.3  Internal Versus External Synchronization  .................   6
   3.4  Advertising TRIP Routes  ..................................   6



Rosenberg, et. al.          Standards Track
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