An Extension to the Session Initiation Protocol (SIP) for Request History Information, February 2014
- Canonical URL:
- File formats:
- PROPOSED STANDARD
- RFC 4244
- M. Barnes
J. van Elburg
- sipcore (rai)
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This document defines a standard mechanism for capturing the history information associated with a Session Initiation Protocol (SIP) request. This capability enables many enhanced services by providing the information as to how and why a SIP request arrives at a specific application or user. This document defines an optional SIP header field, History-Info, for capturing the history information in requests. The document also defines SIP header field parameters for the History-Info and Contact header fields to tag the method by which the target of a request is determined. In addition, this specification defines a value for the Privacy header field that directs the anonymization of values in the History-Info header field. This document obsoletes RFC 4244.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 4844.