本文探讨了SIP协议性能测试方法与评价标准，提出了基于基本呼叫流程的测试方案，并对测试方案中SIP信令和媒体流的NAT穿越问题作了深入的分析。
This thesis discusses SIP performance test method and criterion, putting forward test schemes based on basic call flows and analyzing the problem of SIP signaling and media stream traversing the NAT.
例如，业务分析师可以通过创建一个分析流，从客户电子邮件或呼叫中心报告中提取出结构化信息。
For example, a business analyst might create an analytics flow to extract structured information from customer e-mail or call center reports.
您也可能希望另一个应用程序能够通过Web将其他用户邀请到同一个媒体流中，例如会议呼叫应用程序。
Another application may want to, from the Web, invite another user into the same media stream, such as with a conference calling application.
基本INVITE流（图2）让 user@ibm.com发起对 user@example.com 的呼叫。
This basic INVITE flow (Figure 2) has user@ibm.com initiating a call with user@example.com.
如果没有IT去升级CRM的工作流，运营经理就不能更改呼叫中心的流程。
And an operations manager can't change a call center process without it updating the CRM workflow.
“将电话直接转成留言(或者根本不接)”：即使是为了知道呼叫方是谁，仅仅一瞥，也会打断你的“流”状态。
Send your phone directly to voicemail (or just ignore it) ": even glancing at your phone to see who's beckoned can break your flow."
它提供大的，舒适的套房，一流的餐厅，并在呼叫厨师服务。
It offers large, comfortable suites, a top-notch restaurant, and on-call chef services.
一种方法你可以采取有代表机构，这将允许呼叫者进入代码流和覆盖默认的内部逻辑步骤。
One approach you could take is to have some kind of delegate mechanism, which would allow the caller to break into the flow of code and to override the default logic within the step.
例如，文字及二进位x ML写入器将立即呼叫此方法，并写出开头与结束标记之间的资料流处理内容。
For example, the textual and binary XML writers will call it immediately and write out the streamed contents in between the start and end tags.
如果继续使用相同的资料流呼叫这个方法，则资料流会重设为零。
The stream is reset to zero if this method is called successively with the same stream.
如果继续使用相同的资料流呼叫这个方法，则资料流会重设为零。
The stream is reset to zero if this method is called successively with the same stream.
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