STIR Out of Band Architecture and Use Cases

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Last updated 2017-05-04 (latest revision 2016-10-31)
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Existing work has defined ways to secure the identity of SIP calls, but the in-band mechanisms defined in that work do not properly transit the PSTN. This document defines out-of-band mechanisms which do not require modifying the messages that pass over the PSTN.


Eric Rescorla (
Jon Peterson (

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