...方法名，目前RFC 3261规范定义了六种方法：REGISTER、 INVITE、ACK、CANCEL、BYE、OPTIONS，其他的标准跟踪（ Standards track）RFC可能定义另外的方法，比如：REFER、UPDATE 、 PRACK……
基于8个网页-相关网页
standards-track 标准轨道
standards of track main tenance 轨道养护标准
The IESG is directly responsible for the actions associated with entry into and movement along the Internet "standards track," including final approval of specifications as Internet standards.
IESG还直接负责登记行为以及基于互联网“标准追踪”的行动，其中包括互联网各类标准规范文档的审核工作。
Compliance: To track compliance with standards or process improvement goals.
遵循：为了跟踪遵循标准或者过程改进目标的情况。
Appendix Aprovides a representation of current requirements and open issues related to track safety standards.
附录a提供了当前要求和轨道安全标准相关之未决问题的陈述范本。
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