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Design and Implmentation of Click to Dial System Based on SIP Application Server

Author: WuXiaoShan
Tutor: LiaoJianXin
School: Beijing University of Posts and Telecommunications
Course: Computer Science and Technology
Keywords: CTD SIP Application server 3PCC Next-Generation Network
CLC: TP311.52
Type: Master's thesis
Year: 2009
Downloads: 83
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Abstract

With the rapid development of the Internet, the traditional telecom operators eager business areas to broaden to the Internet to seek new growth point, Internet users want to be able to use to convenient, reliable telephone network services, telecommunications network and Internet service interworking becomes the urgent need, click to dial CTD (Click to Dial) is a typical interoperability program. Click to dial NGN (Next Generation Network) network, one of the basic characteristics of the business. Business features based on this call, you can take full advantage of the the Internet Web's information / polymerization capacity and friendly operator interface, combined with the use of traditional telephone extensive and end-to-end interactive capabilities, to provide Internet users with a convenient information / application access means . Click on the dial-up business was originally implemented using intelligent network can also be used with the network evolution to softswitch environment, softswitch equipment directly, but this was contrary to the idea of ??phase separation of business and call control. As a business support environment main application server, providing a variety of value-added services or smart business business logic resides and execution environment, indirect use of the underlying network resources through the open protocol to interact with the core network equipment, enabling business the separation of the call control. Click on the dial-up business is thus based on the application server to provide an ideal way. SIP (Session Initiation Protocol) protocol because of its open, flexible, scalable characteristics become the first choice of the communication protocol between the application servers and core network equipment. In this paper, a complete click-to-dial business systems from the business model, signaling research, design implementation, the elaborate security issues and other aspects. Including the following sections: (1) introduction paper first introduces the concept of the click-to-dial-up business, and its reasons and background, and then a brief analysis of the research status and development trend of the subject. (2) the application server and the SIP protocol introduced paper introduces a next generation network, especially in the softswitch and IMS (IP MultimediaSubsystem) as the core network architecture. In the system, the application server as the main business, provide the full support of the business operating environment, business development and business management. Finally, the basic concepts of the next generation network control protocol SIP (Session Initiation Protocol), network system and protocol structure. Click to dial system design and the thesis put forward a business model click to dial, then carried out a detailed analysis and comparison of the basic model 3PCC (The 3rd Party Call Control) technology, and given some of the complex (3). function application instance; then, from the aspects of the infrastructure, interface design, the core module, with a focus function focuses on the design and realization of the two core business gateways and business platform subsystems. This part is the main body portion. (4). Thesis click the dial-up business WebService interface, SIP signaling, as well as business use three security issues of security issues. Performance testing Finally, through a click-to-dial call flow model of the performance test, the click-to-dial system to meet the design goals by analyzing the test results obtained, but there are areas of improvement, as the work of the next step (5). .

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