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RFC 7544
Title: Mapping and Interworking of Diversion
Information between Diversion and History-Info Header
Fields in the Session Initiation Protocol (SIP)
Author: M. Mohali
Status: Informational
Stream: Independent
Date: August 2015
Mailbox: [email protected]
Pages: 30
Characters: 68612
Obsoletes: RFC 6044
I-D Tag: draft-mohali-rfc6044bis-02.txt
URL: https://www.rfc-editor.org/info/rfc7544
DOI: http://dx.doi.org/10.17487/RFC7544
Although the SIP History-Info header field described in RFC 7044 is
the solution adopted in IETF, the non-standard Diversion header field
described, as Historic, in RFC 5806 is nevertheless already
implemented and used for conveying call-diversion-related information
in Session Initiation Protocol (SIP) signaling.
RFC 7044 obsoletes the original RFC 4244 and redefines the History-Info
header field for capturing the history information in requests.
Since the Diversion header field is used in existing network
implementations for the transport of call diversion information, its
interworking with the SIP History-Info standardized solution is
needed. This document describes a recommended interworking guideline
between the Diversion header field and the History-Info header field
to handle call diversion information. This work is intended to
enable the migration from non-standard implementations toward IETF
specification-based implementations.
This document obsoletes RFC 6044, which describes the interworking
between the Diversion header field defined in RFC 5806 and the
obsoleted History-Info header field defined on RFC 4244.
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