Session Initiation Protocol (SIP) Media Feature Tag to identity a Public Safety Answering Point (PSAP) Callback Call

Document Type Expired Internet-Draft (individual)
Last updated 2011-05-03
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This specification defines a new Session Initiation Protocol (SIP) media feature tag, sip.psap.callback, that SIP entities can use to identity Public Safety Answering Point (PSAP) callback calls, and to associate them with a previously made emergency call.


Christer Holmberg (

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