Security Mechanism Names for Media

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Last updated 2020-05-29 (latest revision 2019-11-26)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Negotiating the security mechanisms used between a Session Initiation Protocol (SIP) user agent and its next-hop SIP entity is described in [2]. This document adds the capability to distinguish security mechanisms that apply to the media plane by defining a new Session Initiation Protocol (SIP) header field parameter to label such security mechanisms.


Peter Dawes (

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