Session Initiation Protocol (SIP) Call Flow Examples with PASSporT Diversion and History-Info

Document Type Expired Internet-Draft (individual)
Author Mary Barnes 
Last updated 2019-04-26 (latest revision 2018-10-23)
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This document focuses on use cases and call flows which include the History-Info header field and a SIP Identity header field with a PASSport with a "div" claim in cases of retargeting. These use cases are derived from those provided in the SIP History-Info call flows document. The objective is to describe the optimal way to correlate the History-Info header fields with a PASSporT with diversion information to increase the level of confidence in the History-Info header field by the terminating entity making use of the information.


Mary Barnes (

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