Network Working Group G. Camarillo
Request for Comments: 4569 Ericsson
Category: Informational July 2006
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
Internet分配号码管理局（IANA）注册消息媒体功能标签
Status of This Memo
关于下段备忘
This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.
本备忘录为互联网社区提供信息。它没有规定任何类型的互联网标准。本备忘录的分发不受限制。
Copyright Notice
版权公告
Copyright (C) The Internet Society (2006).
版权所有（C）互联网协会（2006年）。
Abstract
摘要
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.
本文档向IANA注册了一个与“消息”媒体类型相关的新媒体功能标签。此媒体功能标签表示特定设备支持“消息”作为流媒体类型。媒体功能标签可用于将呼叫路由到支持某些功能的设备。
Table of Contents
目录
1. Introduction ....................................................2
2. Security Considerations .........................................2
3. IANA Considerations .............................................2
4. Acknowledgements ................................................3
5. Normative References ............................................3
1. Introduction ....................................................2
2. Security Considerations .........................................2
3. IANA Considerations .............................................2
4. Acknowledgements ................................................3
5. Normative References ............................................3
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.
会话描述协议（SDP）规范[5]定义了多种媒体类型。RFC 3840[4]向IANA媒体功能标签注册，该标签与除“消息”媒体类型外的所有媒体类型关联。此文档注册与“消息”媒体类型关联的新媒体功能标签。
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.
RFC 3840未注册“消息”媒体功能标签的原因是，当发布RFC 3840时，SDP规范为RFC 2327[1]。RFC 3840为RFC 2327定义的所有媒体类型定义了媒体功能标签。但是，RFC 2327没有定义“消息”媒体类型。该介质类型由修订的SDP规范[5]定义，该规范在RFC 3840之后发布。
Section 11.1 of RFC 3840 [4] discusses security considerations related to the use of media feature tags.
RFC 3840[4]第11.1节讨论了与使用媒体功能标签相关的安全注意事项。
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].
本规范按照RFC 2506[2]和RFC 3840[4]中定义的过程，在SIP[3]树中注册一个新的媒体功能标签。
Media feature tag name: sip.message
媒体功能标签名称：sip.message
ASN.1 Identifier: 21
ASN.1标识符：21
Summary of the media feature indicated by this tag: This feature tag indicates that the device supports message as a streaming media type.
此标签指示的媒体功能摘要：此功能标签指示设备支持消息作为流媒体类型。
Values appropriate for use with this feature tag: Boolean.
适用于此功能标记的值：布尔值。
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.
特征标签主要用于以下应用、协议、服务或协商机制：该特征标签在通信应用中最有用，用于描述设备（例如电话或PDA）的功能。
Examples of typical use: Routing a call to a phone that can support session-based instant messaging.
典型用途示例：将呼叫路由到支持基于会话的即时消息的手机。
Related standards or documents: RFC 4569.
相关标准或文件：RFC 4569。
Security Considerations: Security considerations for this media feature tag are discussed in Section 11.1 of RFC 3840.
安全注意事项：RFC 3840第11.1节讨论了此媒体功能标签的安全注意事项。
The need for this registration was discussed with Jonathan Rosenberg, Colin Perkins, and Jon Peterson.
与Jonathan Rosenberg、Colin Perkins和Jon Peterson讨论了注册的必要性。
[1] Handley, M. and V. Jacobson, "SDP: Session Description Protocol", RFC 2327, April 1998.
[1] Handley，M.和V.Jacobson，“SDP：会话描述协议”，RFC 2327，1998年4月。
[2] Holtman, K., Mutz, A., and T. Hardie, "Media Feature Tag Registration Procedure", BCP 31, RFC 2506, March 1999.
[2] Holtman，K.，Mutz，A.，和T.Hardie，“媒体功能标签注册程序”，BCP 31，RFC 2506，1999年3月。
[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.
[3] Rosenberg，J.，Schulzrinne，H.，Camarillo，G.，Johnston，A.，Peterson，J.，Sparks，R.，Handley，M.，和E.Schooler，“SIP：会话启动协议”，RFC 3261，2002年6月。
[4] Rosenberg, J., Schulzrinne, H., and P. Kyzivat, "Indicating User Agent Capabilities in the Session Initiation Protocol (SIP)", RFC 3840, August 2004.
[4] Rosenberg，J.，Schulzrinne，H.，和P.Kyzivat，“指出会话启动协议（SIP）中的用户代理功能”，RFC 3840，2004年8月。
[5] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session Description Protocol", RFC 4566, July 2006.
[5] Handley，M.，Jacobson，V.，和C.Perkins，“SDP：会话描述协议”，RFC4566，2006年7月。
Author's Address
作者地址
Gonzalo Camarillo Ericsson Hirsalantie 11 Jorvas 02420 Finland
Gonzalo Camarillo Ericsson Hirsalantie 11 Jorvas 02420芬兰
EMail: Gonzalo.Camarillo@ericsson.com
EMail: Gonzalo.Camarillo@ericsson.com
Full Copyright Statement
完整版权声明
Copyright (C) The Internet Society (2006).
版权所有（C）互联网协会（2006年）。
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.
本文件受BCP 78中包含的权利、许可和限制的约束，除其中规定外，作者保留其所有权利。
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.
本文件及其包含的信息是按“原样”提供的，贡献者、他/她所代表或赞助的组织（如有）、互联网协会和互联网工程任务组不承担任何明示或暗示的担保，包括但不限于任何保证，即使用本文中的信息不会侵犯任何权利，或对适销性或特定用途适用性的任何默示保证。
Intellectual Property
知识产权
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.
IETF对可能声称与本文件所述技术的实施或使用有关的任何知识产权或其他权利的有效性或范围，或此类权利下的任何许可可能或可能不可用的程度，不采取任何立场；它也不表示它已作出任何独立努力来确定任何此类权利。有关RFC文件中权利的程序信息，请参见BCP 78和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.
向IETF秘书处披露的知识产权副本和任何许可证保证，或本规范实施者或用户试图获得使用此类专有权利的一般许可证或许可的结果，可从IETF在线知识产权存储库获取，网址为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.
IETF邀请任何相关方提请其注意任何版权、专利或专利申请，或其他可能涵盖实施本标准所需技术的专有权利。请将信息发送至IETF的IETF-ipr@ietf.org.
Acknowledgement
确认
Funding for the RFC Editor function is provided by the IETF Administrative Support Activity (IASA).
RFC编辑器功能的资金由IETF行政支持活动（IASA）提供。