为了解决这个问题，本文提出了中转服务器。
To solve those problems, this thesis presents the conception of transit server.
本文设计并实现了基于SIP协议网络电话中转服务器，并在本文的结尾部分对中转服务器的下一步工作做出了展望。
The paper shows the design and implementation of the transit server based on SIP protocol. At the end of this thesis, the next work of the transit server in prospect.
中转服务器解析终端或者欧洲服务器发送过来的数据包，保存相关的数据，然后把数据重新打包发送到欧洲服务器或者终端。
The transit server analysis the data packet sent by the client or the server, saves the relevant data, repackages the data, and then sends to the European server or the client.
实现中转服务器后，可以方便的统计在某一时段网络电话的使用情况，从而可以做出针对性的优惠措施，获得更大的经济利益。
By the transit server, we can statistic the use of VoIP in a certain moment conveniently, which can help us to offer targeted incentives and gain greater economic benefits.
实现中转服务器后，可以方便的统计在某一时段网络电话的使用情况，从而可以做出针对性的优惠措施，获得更大的经济利益。
By the transit server, we can statistic the use of VoIP in a certain moment conveniently, which can help us to offer targeted incentives and gain greater economic benefits.
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