Internet Engineering Task Force (IETF) A.B. Roach
Request for Comments: 6878 Mozilla
Updates: 3261 March 2013
Category: Standards Track
ISSN: 2070-1721
Internet Engineering Task Force (IETF) A.B. Roach
Request for Comments: 6878 Mozilla
Updates: 3261 March 2013
Category: Standards Track
ISSN: 2070-1721
IANA Registry for the Session Initiation Protocol (SIP) "Priority" Header Field
会话启动协议（SIP）“优先级”头字段的IANA注册表
Abstract
摘要
This document defines a new IANA registry to keep track of the values defined for the Session Initiation Protocol (SIP) "Priority" header field. It updates RFC 3261.
本文档定义了一个新的IANA注册表，以跟踪为会话启动协议（SIP）“优先级”头字段定义的值。它更新了RFC3261。
Status of This Memo
关于下段备忘
This is an Internet Standards Track document.
这是一份互联网标准跟踪文件。
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741.
本文件是互联网工程任务组（IETF）的产品。它代表了IETF社区的共识。它已经接受了公众审查，并已被互联网工程指导小组（IESG）批准出版。有关互联网标准的更多信息，请参见RFC 5741第2节。
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6878.
有关本文件当前状态、任何勘误表以及如何提供反馈的信息，请访问http://www.rfc-editor.org/info/rfc6878.
Copyright Notice
版权公告
Copyright (c) 2013 IETF Trust and the persons identified as the document authors. All rights reserved.
版权所有（c）2013 IETF信托基金和确定为文件作者的人员。版权所有。
This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.
本文件受BCP 78和IETF信托有关IETF文件的法律规定的约束(http://trustee.ietf.org/license-info)自本文件出版之日起生效。请仔细阅读这些文件，因为它们描述了您对本文件的权利和限制。从本文件中提取的代码组件必须包括信托法律条款第4.e节中所述的简化BSD许可证文本，并提供简化BSD许可证中所述的无担保。
This document defines a new IANA registry to keep track of the values defined for the Session Initiation Protocol (SIP) "Priority" header field. This header field was defined in [RFC3261], Section 20.26. It was clearly specified in a way that allows for the creation of new values beyond those originally specified; however, no registry has been established for it.
本文档定义了一个新的IANA注册表，以跟踪为会话启动协议（SIP）“优先级”头字段定义的值。该标题字段在[RFC3261]第20.26节中定义。明确规定的方式允许在最初规定的价值之外创造新的价值；但是，尚未为其建立登记册。
This document adds a new sub-registry, "Priority Header Field Values", to the "Session Initiation Protocol (SIP) Parameters" registry page. Its format and initial values are as shown in the following table:
本文档向“会话启动协议（SIP）参数”注册表页面添加了一个新的子注册表“优先级标头字段值”。其格式和初始值如下表所示：
+------------+-----------+
| Priority | Reference |
+------------+-----------+
| non-urgent | RFC 3261 |
| normal | RFC 3261 |
| urgent | RFC 3261 |
| emergency | RFC 3261 |
+------------+-----------+
+------------+-----------+
| Priority | Reference |
+------------+-----------+
| non-urgent | RFC 3261 |
| normal | RFC 3261 |
| urgent | RFC 3261 |
| emergency | RFC 3261 |
+------------+-----------+
The policy for registration of values in this registry is "IETF Review" as that term is defined by [RFC5226]. This policy was chosen over lighter-weight policies due the potential architectural impact of the semantics associated with new values. Efforts contemplating adding a Priority value should consider whether the SIP Resource-Priority [RFC4412] or even a different protocol would be more appropriate for achieving their requirements.
本注册表中的值注册政策为“IETF审查”，该术语由[RFC5226]定义。由于与新值关联的语义可能会对体系结构产生影响，因此选择了此策略而不是较轻的策略。考虑添加优先级值的努力应该考虑SIP资源优先级[RCF412]或甚至不同的协议是否更适合实现它们的要求。
This document does not have any impact on the security of the SIP protocol. Its purpose is purely administrative in nature.
本文件对SIP协议的安全性没有任何影响。其目的纯属行政性质。
[RFC3261] 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.
[RFC3261]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。
[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA Considerations Section in RFCs", BCP 26, RFC 5226, May 2008.
[RFC5226]Narten，T.和H.Alvestrand，“在RFCs中编写IANA注意事项部分的指南”，BCP 26，RFC 5226，2008年5月。
[RFC4412] Schulzrinne, H. and J. Polk, "Communications Resource Priority for the Session Initiation Protocol (SIP)", RFC 4412, February 2006.
[RFC4412]Schulzrinne，H.和J.Polk，“会话启动协议（SIP）的通信资源优先级”，RFC 4412，2006年2月。
Author's Address
作者地址
Adam Roach Mozilla Dallas, TX US
美国德克萨斯州达拉斯的亚当·罗奇·莫兹拉
EMail: adam@nostrum.com
EMail: adam@nostrum.com