RFC 8498 on A P-Served-User Header Field Parameter for an Originating Call Diversion (CDIV) Session Case in the Session Initiation Protocol (SIP)

rfc-editor@rfc-editor.org Fri, 15 February 2019 05:48 UTC

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A new Request for Comments is now available in online RFC libraries.

        RFC 8498

        Title:      A P-Served-User Header Field Parameter 
                    for an Originating Call Diversion (CDIV) 
                    Session Case in the Session Initiation 
                    Protocol (SIP) 
        Author:     M. Mohali
        Status:     Informational
        Stream:     IETF
        Date:       February 2019
        Mailbox:    marianne.mohali@orange.com
        Pages:      15
        Characters: 33188
        Updates:    RFC 5502

        I-D Tag:    draft-ietf-sipcore-originating-cdiv-parameter-08.txt

        URL:        https://www.rfc-editor.org/info/rfc8498

        DOI:        10.17487/RFC8498

The P-Served-User header field was defined based on a requirement
from the 3rd Generation Partnership Project (3GPP) IMS (IP Multimedia
Subsystem) in order to convey the identity of the served user, his/
her registration state, and the session case that applies to that
particular communication session and application invocation.  A
session case is metadata that captures the status of the session of a
served user regardless of whether or not the served user is
registered or the session originates or terminates with the served
user.  This document updates RFC 5502 by defining a new P-Served-User
header field parameter, "orig-cdiv".  The parameter conveys the
session case used by a proxy when handling an originating session
after Call Diversion (CDIV) services have been invoked for the served
user.  This document also fixes the ABNF in RFC 5502 and provides
more guidance for using the P-Served-User header field in IP

This document is a product of the Session Initiation Protocol Core Working Group of the IETF.

INFORMATIONAL: This memo provides information for the Internet community.
It does not specify an Internet standard of any kind. Distribution of
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