【作者】 杨洋；

【导师】 陈耀武；

【作者基本信息】 浙江大学 ， 电子信息技术及仪器， 2005， 硕士

【摘要】 基于H．323协议的网络可视电话终端在宽带互联网上传送可视图像、语音和数据等信息，是现代通信技术的重要发展方向。H．323协议是网络多媒体通讯的标准协议，本文详细阐述了基于H．323协议的网络可视电话终端的软件设计。 第一章阐述了网络可视电话的发展现状，并提出了课题研究工作的意义。 第二章介绍了H．323协议与软件设计平台，着重介绍了H．323协议的体系结构、H．323终端的组成和H．323协议的信令。 第三章讨论了整个网络可视电话系统的整体结构，主要包括硬件总体方案和软件总体设计。 第四章对网络可视电话的软件设计进行了详细讨论，分为三个部分：终端软件设计、GUI设计和系统交互设计。终端软件设计讨论了H．323终端的架构和呼叫流程。GUI设计讨论了界面设计、按键设计、数据结构定义和对象定义。系统交互设计讨论了终端的接口、GUI的接口以及通信流程。 第五章从结构测试、功能测试和协议互通性测试三个方面讨论了系统测试。 第六章给出了本文研究的主要结论，并对系统进一步的优化工作进行展望。更多还原

【Abstract】 IP video phone based on the H.323 protocols transmit the information of video, voice and data over internet. It is an important development direction of the communication technology. H.323 protocols is the standard protocol of network based multimedia communication. This paper describes the software design and implementation of IP video phone.Chapter 1 provides the overview of the IP video phone, and gives the significance of the research work.Chapter 2 introduces the H.323 protocols and the platform of software design. The architecture of H.323 protocols, the component of H.323 terminal and the signal of H.323 protocol are presented in details.Chapter 3 presents the architecture of the IP video phone, including hardware architecture design and software architecture design.Chapter 4 is focused on the software design of IP video phone, including three parts: terminal design, GUI design, and system interface design. Terminal design discusses the architecture of H.323 terminal and the call flow. GUI design includes the user interface design, key design, data structure defines and object define. System interface design includes terminal interface design, GUI interface design and data exchange of the tow part.Chapter 5 discusses the software test of IP video phone; include software framework test, software function test, and protocol compatibles test.Chapter 6 gives the main research conclusion and the prospect of further research work.更多还原