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

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Document Type Expired Internet-Draft (individual)
Author Mary Barnes 
Last updated 2018-01-04 (latest revision 2017-07-03)
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This document describes use cases and call flows which include the History-Info header field and a SIP Identity header field [I-D.ietf-stir-rfc4474bis] with a PASSport with diversion information in cases of retargeting. These use cases are derived from those provided in [RFC7131]. 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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