正如你所见，NAT路由器将每台计算机的IP地址和端口号都存储在地址转换表中。
As you can see, the NAT router stores the IP address and port number of each computer in the address translation table.
由于nat路由器现在已经拥有了这台计算机保存在地址转换表中的的源地址和源端口号，它将会在有效期内继续使用同一个端口号进行转换。
Since the NAT router now has the computer's source address and source port saved to the address translation table, it will continue to use that same port number for the duration of the connection.
针对会话发起协议（SIP）穿越网络地址转换（NAT）的问题，提出一种基于端口探测的解决方案。
To solve the problem of Session Initiation Protocol(SIP) traversing Network Address Translator(NAT), this paper describes a new method based on port detection.
通过端口预测方法实现对称型网络地址转换的穿越。
The symmetrical NAT traversal is achieved by using port prediction method.
通过端口预测方法实现对称型网络地址转换的穿越。
The symmetrical NAT traversal is achieved by using port prediction method.
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