文档介绍：华中科技大学
硕士学位论文
基于SIP协议的IP-PBX系统的设计与实现
姓名:蔡林涛
申请学位级别:硕士
专业:软件工程
指导教师:陈长清
2010-01-16
华中科技大学硕士学位论文
摘要
在现代化通信技术飞速发展的今天,企业的生存与持续发展,需要的是低成本
和高效率。由于企业规模不断的成长壮大,分支机构逐渐增多,这一切都将给企业
带来高额的通信开销,大量的国际、国内长途以及传真的使用,带给企业巨额的开
支和沉重的负荷。这笔庞大的开销威胁着企业长期稳定的发展,困扰着企业并长期
存在。这就要求企业尽快整合各个分支机构的通信网络,让其发挥更高的效率。随
着网络信息流量的不断增长,基于的各种业务的发展令人目不暇接。IP-PBX
就是其中之一。
首先分析了 IP-PBX 的背景和发展现状以及研究 IP-PBX 的目的和实际意义。对
SIP 协议做了简单介绍之后,接着对 IP-PBX 的总体结构做了分析。将系统分为了三
个大的模块:配置管理模块、终端管理模块和通话控制模块。对其中最重要的两个
模块终端管理模块和通话控制模块的结构和设计做了重点介绍,接着分析了每个模
块的结构,讨论了每个模块的线程设计和消息机制,并给出了实现举例。最后,在
已设计的模块的基础上讨论了如何设计实现系统的几个重要功能。

关键词:通信网络 SIP协议终端管理通话控制
I
华中科技大学硕士学位论文
Abstract
With developing of the munications technology, the enterprises
sustainable development depends on low cost and high efficiency. With the development
panies, more and more branches set up, all these will bring munications
costs, a large number of domestic long-distance calls, international long-distance and the
use of fax, bring a heavy load and huge business spending to pany. This huge
expenditure would have been panied with the development pany. Its
importance and urgency panies integrate the various branches of the
work as soon as possible to make it more efficient. With the growth of
network information flow, a variety of dazzling development of -based
e up. IP-PBX is one of them.
First analyzes the background of the IP-PBX as well as development status and
research and the purpose and practical significance of researching IP-PBX system. After a
brief introduction of the SIP protocol, it analyzes the overall structure of IP-PBX system.
System has three main modules: configuration module, terminal management and call
control module. Then introduce the structure and design of terminal management module
and the call control module which are the two most important modules of the system.
Finally discuss the design and implementation of sevel important system features base on
the modules above.

K