A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Sip ALerting for User Devices Working Group of the IETF.
Title : URNs for the Alert-Info Header Field of the Session Initiation Protocol (SIP)
Authors : Laura Liess
Roland Jesske
Alan Johnston
Dale R. Worley
Paul Kyzivat
Filename : draft-ietf-salud-alert-info-urns-13.txt
Pages : 45
Date : 2014-07-20
Abstract:
The Session Initiation Protocol (SIP) supports the capability to
provide a reference to a specific rendering to be used by the UA as
an alerting signal (e.g., a ring tone or ringback tone) when the user
is alerted. This is done using the Alert-Info header field.
However, the reference (typically a URL) addresses only a specific
network resource with specific rendering properties. There is
currently no support for standard identifiers for describing the
semantics of the alerting situation or the characteristics of the
alerting signal, without being tied to a particular rendering. To
overcome these limitations and support new applications, a new family
of URNs for use in Alert-Info header fields (and situations with
similar requirements) is defined in this specification.
This document normatively updates RFC 3261, which defines the Session
Initiation Protocol (SIP): It changes the usage of the Alert-Info
header field defined in RFC 3261 by additionally allowing its use in
all provisional responses to INVITE (except the 100 response). This
document also permits proxies to add and remove header field values
from the Alert-Info header field.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-salud-alert-info-urns/
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-salud-alert-info-urns-13
A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-ietf-salud-alert-info-urns-13
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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