并基于OPC协议，从客户端程序的设计、客户端实现的主要功能、数据传输方式等方面，对信息系统的集成方式进行了分析和设计。
Based on OPC protocol, the method of information system integration was analyzed and designed, including the design of client programs, the function of clients and data transmission.
该方法通过适当扩展SIP协议，借助STUN协议以及RTP中继实现端对端的SIP信令和媒体流的建立，完成通信连接的建立与维持。
It extends SIP and USES STUN and RTP relay to perform the connection of SIP signal and media, and then establish the communication and maintain it.
考察了带宽非对称对基于端到端的TCP协议性能的影响程度。
The performance of TCP over bandwidth asymmetry networks is analyzed.
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