SIP协议的即时消息系统设计方案.docVIP

桂林工学院 毕业设计（论 文） 设计（论文）题目 ： 基于SIP协议的即时消息系统设计 系 ： 电子与计算机系 学 生 姓 名 ： 专 业 ： 通信工程 班 级 ： 2003-1 学 号 ： 3030431138 指 导 教 师 ： 摘要 以Internet为代表的新技术革命正在深刻地改变着传统的电信观念和体系结构。从当前电信发展的大趋势看，IP业务将成为未来业务的主体，特别随着诸如下一代网络等新技术的发展，IP向传统电信业务的渗透和传统电信业务与IP的融合步伐会大大加快，因此，以IP软交换为基础的NGN将是未来电信网的发展方向。SIP协议作为一个新的VOIP协议有着广阔的前途Visual C++以及微软的RTC Client API（即时消息客户端应用编程接口）来制作一个基于SIP协议的即时消息客户终端，此章中，我先介绍了RTC Client API（即时消息客户端应用编程接口），然后对程序语法和算法做了介绍，最后讲了程序界面设计。论文的完成过程，有过不少问题，但大多数都被解决，使我顺利完成这篇论文，感谢大家在我写论文过程给予我的帮助。 关键词: VOIP；NGN（下一代网络）；SIP（会话初始协议）；IM（即时消息） Based on SIP agreement soft telephone system design and realization Student:DENG Li-Jun Teacher:YANG Xiao-Fei Abstract: The new technical revolution represented by Internet is changing the traditional telecommunication idea and system structure deeply. By the look of main trend of present telecommunication development, IP business will become the subject of future business, very with the development of new technologies such as network of future generation etc., IP will accelerate greatly to traditional telecommunication service infiltration and traditional telecommunication service and integration paces of IP of telecommunication service, so, exchange softly for the developing direction that NGN on the foundation will be the future telecommunication network with IP. SIP has wide future as a new VOIP protocol. Thesis this make one basic introduction on SIP, and to how make one based on SIP protocol IP phone soft terminal station make a detailed exposition, the article is divided into four chapters altogether, chapter one has introduced the knowledge about VOIP, chapter two has described SIP protocol, chapter three described the IP telephone soft terminal manufacture method based on SIP protocol, chapter four explained the question met in the co