Examples call flow in race condition on Session Initiation Protocol

Document Type Replaced Internet-Draft (individual)
Last updated 2006-10-24
Replaces draft-hasebe-sipping-exceptional-procedure-example
Replaced by draft-ietf-sipping-race-examples
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Intended RFC status (None)
Expired & archived
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IESG IESG state Replaced by draft-ietf-sipping-race-examples
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document gives examples of Session Initiation Protocol (SIP) call flows in race condition. Call flows in race conditions are confusing and this document shows the best practices to handle them. The elements in these call flows include SIP User Agents and SIP Proxies. Call flow diagrams and message details are shown.


Miki Hasebe (hasebe.miki@east.ntt.co.jp)
Jun Koshiko (j.koshiko@east.ntt.co.jp)
Yasushi Suzuki (suzuki.yasushi@east.ntt.co.jp)
Tomoyuki Yoshikawa (tomoyuki.yoshikawa@east.ntt.co.jp)
Paul Kyzivat (pkyzivat@cisco.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)