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Voice over IP (VoIP) SIP Peering Use Cases
RFC 6405

Internet Engineering Task Force (IETF)                    A. Uzelac, Ed.
Request for Comments: 6405                               Global Crossing
Category: Informational                                      Y. Lee, Ed.
ISSN: 2070-1721                                            Comcast Cable
                                                           November 2011

               Voice over IP (VoIP) SIP Peering Use Cases

Abstract

   This document depicts many common Voice over IP (VoIP) use cases for
   Session Initiation Protocol (SIP) peering.  These use cases are
   categorized into static and on-demand, and then further sub-
   categorized into direct and indirect.  These use cases are not an
   exhaustive set, but rather the most common use cases deployed today.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6405.

Copyright Notice

   Copyright (c) 2011 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Uzelac & Lee                  Informational                     [Page 1]
RFC 6405               VoIP SIP Peering Use Cases          November 2011

Table of Contents

   1. Introduction ....................................................2
   2. Terminology .....................................................3
   3. Reference Architecture ..........................................3
   4. Contexts of Use Cases ...........................................4
   5. Use Cases .......................................................4
      5.1. Static Peering Use Cases ...................................5
      5.2. Static Direct Peering Use Case .............................5
           5.2.1. Administrative Characteristics .....................10
           5.2.2. Options and Nuances ................................10
      5.3. Static Direct Peering Use Case - Assisting LUF and LRF ....11
           5.3.1. Administrative Characteristics .....................12
           5.3.2. Options and Nuances ................................12
      5.4. Static Indirect Peering Use Case - Assisting LUF and LRF ..12
           5.4.1. Administrative Characteristics .....................19
           5.4.2. Options and Nuances ................................19
      5.5. Static Indirect Peering Use Case ..........................19
           5.5.1. Administrative Characteristics .....................20
           5.5.2. Options and Nuances ................................21
      5.6. On-Demand Peering Use Case ................................21
           5.6.1. Administrative Characteristics .....................21
           5.6.2. Options and Nuances ................................21
   6. Acknowledgments ................................................22
   7. Security Considerations ........................................22
   8. References .....................................................22
      8.1. Normative References ......................................22
      8.2. Informative References ....................................23

1.  Introduction

   This document describes important Voice over IP (VoIP) use cases for
   SIP-based [RFC3261] peering.  These use cases are determined by the
   Session PEERing for Multimedia INTerconnect (SPEERMINT) working group
   and will assist in identifying requirements and other issues to be
   considered for future resolution by the working group.

   Only use cases related to VoIP are considered in this document.
   Other real-time SIP communications use cases, like Instant Messaging
   (IM), video chat, and presence are out of scope for this document.

   The use cases contained in this document are described as

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