RFC 3665 (rfc3665) - Page 1 of 94

Session Initiation Protocol (SIP) Basic Call Flow Examples

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Network Working Group                                        A. Johnston
Request for Comments: 3665                                           MCI
BCP: 75                                                       S. Donovan
Category: Best Current Practice                                R. Sparks
                                                           C. Cunningham
                                                             dynamicsoft
                                                              K. Summers
                                                                   Sonus
                                                           December 2003


      Session Initiation Protocol (SIP) Basic Call Flow Examples

Status of this Memo

   This document specifies an Internet Best Current Practices for the
   Internet Community, and requests discussion and suggestions for
   improvements.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

Abstract

   This document gives examples of Session Initiation Protocol (SIP)
   call flows.  Elements in these call flows include SIP User Agents and
   Clients, SIP Proxy and Redirect Servers.  Scenarios include SIP
   Registration and SIP session establishment.  Call flow diagrams and
   message details are shown.





















Johnston, et al.         Best Current Practice
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