Emergency Services URI for the Session Initiation Protocol

Document Type Replaced Internet-Draft (individual)
Author Henning Schulzrinne 
Last updated 2006-05-12 (latest revision 2006-01-30)
Replaced by RFC 5031
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Expired & archived
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Stream Stream state (No stream defined)
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IESG IESG state Replaced by draft-ietf-ecrit-service-urn
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


As part of an overall architecture for supporting emergency calling for the Session Initiation Protocol (SIP), this document defines universal emergency SIP URIs, sip:sos@domain and sips:sos@domain, that allows SIP user agents to contact the local emergency call center. It also defines conventions that increase the high probability of reaching the appropriate emergency call center. The document does not define any SIP protocol extensions.


Henning Schulzrinne (hgs+geopriv@cs.columbia.edu)

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