A new Request for Comments is now available in online RFC libraries.
RFC 3892
Title: The Session Initiation Protocol (SIP)
Referred-By Mechanism
Author(s): R. Sparks
Status: Standards Track
Date: September 2004
Mailbox: RjS@xten.com
Pages: 25
Characters: 52441
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-sip-referredby-05.txt
URL: ftp://ftp.rfc-editor.org/in-notes/rfc3892.txt
The Session Initiation Protocol (SIP) REFER method provides a
mechanism where one party (the referrer) gives a second party (the
referee) an arbitrary URI to reference. If that URI is a SIP URI, the
referee will send a SIP request, often an INVITE, to that URI (the
refer target). This document extends the REFER method, allowing the
referrer to provide information about the REFER request to the refer
target using the referee as an intermediary. This information
includes the identity of the referrer and the URI to which the
referrer referred. The mechanism utilizes S/MIME to help protect this
information from a malicious intermediary. This protection is
optional, but a recipient may refuse to accept a request unless it is
present.
This document is a product of the Session Initiation Protocol Working
Group of the IETF.
This is now a Proposed Standard Protocol.
This document specifies an Internet standards track protocol for
the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the
"Internet Official Protocol Standards" (STD 1) for the
standardization state and status of this protocol. Distribution
of this memo is unlimited.
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USC/Information Sciences Institute
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