Internet DRAFT - draft-camarillo-sipping-message-tag
draft-camarillo-sipping-message-tag
SIPPING Working Group G. Camarillo
Internet-Draft Ericsson
Expires: December 3, 2005 June 1, 2005
Internet Assigned Number Authority (IANA) Registration of the Message
Media Feature Tag
draft-camarillo-sipping-message-tag-00.txt
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Copyright Notice
Copyright (C) The Internet Society (2005).
Abstract
This document registers with the IANA a new media feature tag
associated with the 'message' media type. This media feature tag
indicates that a particular device supports 'message' as a streaming
media type. Media feature tags can be used to route calls to devices
that support certain features.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Security Considerations . . . . . . . . . . . . . . . . . . . 3
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
4. Acknowledges . . . . . . . . . . . . . . . . . . . . . . . . . 4
5. Normative References . . . . . . . . . . . . . . . . . . . . . 4
Author's Address . . . . . . . . . . . . . . . . . . . . . . . 4
Intellectual Property and Copyright Statements . . . . . . . . 5
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1. Introduction
The SDP (Session Description Protocol) specification [5] defines a
number of media types. RFC 3840 [4] registers with the IANA media
feature tags associated with all those media types except for the
'message' media type. This document registers a new media feature
tag that is associated with the 'message' media type.
The reason why the 'message' media feature tag was not registered by
RFC 3840 was that when RFC 3840 was published, the SDP specification
was RFC 2327 [1]. RFC 3840 defined media feature tags for all the
media types defined by RFC 2327. However, RFC 2327 did not define
the 'message' media type. This media type was defined by the revised
SDP specification [5], which was published after RFC 3840.
2. Security Considerations
This specification does not affect the security of the Internet. RFC
3840 [4] discusses security considerations related to the use of
media feature tags.
3. IANA Considerations
This specification registers a new media feature tag in the SIP [3]
tree per the procedures defined in RFC 2506 [2] and RFC 3840 [4].
Media feature tag name: sip.message
ASN.1 Identifier: New assignment by IANA.
Summary of the media feature indicated by this tag: This feature
tag indicates that the device supports message as a streaming
media type.
Values appropriate for use with this feature tag: Boolean.
The feature tag is intended primarily for use in the following
applications, protocols, services, or negotiation mechanisms: This
feature tag is most useful in a communications application for
describing the capabilities of a device, such as a phone or PDA.
Examples of typical use: Routing a call to a phone that can
support session-based instant messaging.
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Related standards or documents: RFC xxxx. (Note for the RFC
editor: substitute xxxx with the number of this RFC)
Security Considerations: Security considerations for this media
feature tag are discussed in Section 11.1 of RFC 3840.
4. Acknowledges
The need for this registration was discussed with Jonathan Rosenberg,
Colin Perkins, and Jon Peterson.
5. Normative References
[1] Handley, M. and V. Jacobson, "SDP: Session Description
Protocol", RFC 2327, April 1998.
[2] Holtman, K., Mutz, A., and T. Hardie, "Media Feature Tag
Registration Procedure", BCP 31, RFC 2506, March 1999.
[3] Rosenberg, J., Schulzrinne, H., Camarillo, G., Johnston, A.,
Peterson, J., Sparks, R., Handley, M., and E. Schooler, "SIP:
Session Initiation Protocol", RFC 3261, June 2002.
[4] Rosenberg, J., Schulzrinne, H., and P. Kyzivat, "Indicating User
Agent Capabilities in the Session Initiation Protocol (SIP)",
RFC 3840, August 2004.
[5] Handley, M., "SDP: Session Description Protocol",
draft-ietf-mmusic-sdp-new-24 (work in progress), February 2005.
Author's Address
Gonzalo Camarillo
Ericsson
Hirsalantie 11
Jorvas 02420
Finland
Email: Gonzalo.Camarillo@ericsson.com
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Acknowledgment
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Internet Society.
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