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Asterisk系统及其应用分析

发表时间:2008-06-30  浏览量:3016  下载量:1340
全部作者: 汤秀娟,白中英
作者单位: 北京邮电大学计算机科学与技术学院
摘 要: Asterisk是由Digium公司开发的开放源码的软件PBX。它不仅支持传统的电话业务,还支持电话会议、语音信箱、收发传真等新型业务,并且它的通用性强、可扩展性能好、硬件成本低,因此吸引了大量的用户和开发者,有广阔的应用前景。本文系统地介绍了Asterisk的特点、内部系统结构,以及系统可动态加载的API模块的功能,并且介绍了拨号方案的语法,给出了一个拨号方案的简单例子。此外,还对Asterisk系统的初始化流程、呼叫流程、呼入呼出场景以及处理呼叫时的控制流程进行了详细的分析。最后,介绍了一种基于Asterisk的VoIP(voice over internet protocol)解决方案。
关 键 词: 计算机应用;VoIP;Asterisk;专用分组交换机
Title: Analysis of Asterisk system and its application
Author: TANG Xiujuan, BAI Zhongying
Organization: School of Computer Science and Technology, Beijing University of Posts and Telecommunications
Abstract: Asterisk is an open source software-PBX developed by company Digium. Asterisk system supports not only the traditional phone service but also the call conference, voicemail, faxes and other new services. It has high universality and scalability, and its hardware cost is low. Therefore, it has attracted a large number of users and developer. This paper systematically introduces the features of Asterisk, its internal architecture and the functions of its dynamically-loaded API modules. In addition, the grammar of dial-plan is introduced and a simple example of dial-plan is given. Furthermore, the initialization process, call process of Asterisk system, scenario of incoming call and outbound call, and the control process when processing calls are analyzed in detail. At last, a VoIP solution based on Asterisk system is introduced.
Key words: computer application; VoIP; Asterisk; private branch exchange(PBX)
发表期数: 2008年10月第12期
引用格式: 汤秀娟,白中英. Asterisk系统及其应用分析[J]. 中国科技论文在线精品论文,2008,1(12):1365-1371.
 
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