SIP Reason header extension for indicating redirection reasons

Document Type Expired Internet-Draft (individual)
Author John Elwell 
Last updated 2005-06-06 (latest revision 2004-10-21)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This proposes an extension to the SIP Reason header to provide additional information concerning retargeting in SIP, a particular motivation being improved interoperability with PSTN diversion.


John Elwell (

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