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RFC 9796
Title: SIP Call-Info Parameters for Rich Call Data
Author: C. Wendt,
J. Peterson
Status: Standards Track
Stream: IETF
Date: July 2025
Mailbox: [email protected],
[email protected]
Pages: 29
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-sipcore-callinfo-rcd-19.txt
URL: https://www.rfc-editor.org/info/rfc9796
DOI: 10.17487/RFC9796
This document specifies a usage of the SIP Call-Info header field
that incorporates Rich Call Data (RCD) associated with the identity
of the originating party in order to provide to the terminating party
a description of the caller (including details about the reason for
the session). RCD includes information about the caller beyond the
telephone number (such as a calling name, logo, photo, or jCard
object representing the caller), which can help the called party
decide how to handle the session request.
This document defines three new parameters 'call-reason', 'verified',
and 'integrity' for the SIP Call-Info header field and also a new
token ("jcard") for the 'purpose' parameter of the Call-Info header
field. It also provides guidance on the use of the Call-Info
'purpose' parameter token, "icon".
This document is a product of the Session Initiation Protocol Core Working
Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: 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 Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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