Tech-invite  3GPPspecsRELsGlossariesSIPRFCs
8887868584838281807978777675747372717069686766656463626160595857565554535251504948474645444342414039383736353433323130292827262524232221201918171615141312111009080706050403020100

in Index   Prev   Next

RFC 4569

Internet Assigned Number Authority (IANA) Registration of the Message Media Feature Tag

Pages: 4
Informational

Top   ToC   RFC4569 - Page 1
Network Working Group                                       G. Camarillo
Request for Comments: 4569                                      Ericsson
Category: Informational                                        July 2006


        Internet Assigned Numbers Authority (IANA) Registration
                    of the Message Media Feature Tag

Status of This Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2006).

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.

Table of Contents

1. Introduction ....................................................2 2. Security Considerations .........................................2 3. IANA Considerations .............................................2 4. Acknowledgements ................................................3 5. Normative References ............................................3
Top   ToC   RFC4569 - Page 2

1. Introduction

The Session Description Protocol (SDP) 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

Section 11.1 of 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: 21 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. Related standards or documents: RFC 4569. Security Considerations: Security considerations for this media feature tag are discussed in Section 11.1 of RFC 3840.
Top   ToC   RFC4569 - Page 3

4. Acknowledgements

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., Jacobson, V., and C. Perkins, "SDP: Session Description Protocol", RFC 4566, July 2006.

Author's Address

Gonzalo Camarillo Ericsson Hirsalantie 11 Jorvas 02420 Finland EMail: Gonzalo.Camarillo@ericsson.com
Top   ToC   RFC4569 - Page 4
Full Copyright Statement

   Copyright (C) The Internet Society (2006).

   This document is subject to the rights, licenses and restrictions
   contained in BCP 78, and except as set forth therein, the authors
   retain all their rights.

   This document and the information contained herein are provided on an
   "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
   OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
   ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
   INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
   INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
   WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Intellectual Property

   The IETF takes no position regarding the validity or scope of any
   Intellectual Property Rights or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; nor does it represent that it has
   made any independent effort to identify any such rights.  Information
   on the procedures with respect to rights in RFC documents can be
   found in BCP 78 and BCP 79.

   Copies of IPR disclosures made to the IETF Secretariat and any
   assurances of licenses to be made available, or the result of an
   attempt made to obtain a general license or permission for the use of
   such proprietary rights by implementers or users of this
   specification can be obtained from the IETF on-line IPR repository at
   http://www.ietf.org/ipr.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights that may cover technology that may be required to implement
   this standard.  Please address the information to the IETF at
   ietf-ipr@ietf.org.

Acknowledgement

   Funding for the RFC Editor function is provided by the IETF
   Administrative Support Activity (IASA).