After a brief introduction of the SIP protocol, it analyzes the overall structure of IP-PBX system.

IP-PBX is one of the hottest research directions in recent computer telecommunication integration technology domain.

IP-PBX系统是近年来计算机网与传统电话系统技术融合领域的研究热点。

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Implementation Technology of Value-added Services in IP-PBX System

IP-PBX系统增值业务实现技术研究

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With the IP-PBX systems developing in the small-middle enterprises, the implement becomes simple.

随着IP-PBX系统在中小型公司中越来越普及，实现也越来越简单，成本的降低便成为普遍关注的重点。

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At last, the author took part in the project of Nanchang Municipal Public Group Call Center, based on it, detailedly expounded the design and realize process of the Asterisk-Based IP-PBX System.

并以南昌市政公用集团客户呼叫中心整合系统工程作为项目依托，详细阐述了Asterisk平台下呼叫中心的设计实现过程。

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Protocol/ transport technologies such as XML, HTTP, Java Telephone API, and SNMP may be used for IP-PBX communication based on the back end system.

协议/传输技术，例如XML，HTTP，Java Telephone API，以及SNMP，都会被应用于基于后端系统的IP-PBX通讯。

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The main content of this thesis is IP-PBX call routing system, which is in the control-layer of IP-PBX devices.

本文的研究对象是IP-PBX的呼叫路由系统，它位于IP-PBX设备的控制层，多种不同通信终端在呼叫路由系统的控制下实现互通。

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User agents are typically phones ( POTS, mobile phones, soft phones, IP-PBX devices, and so on), but can be any SIP-enabled device.

用户代理一般是电话（POTS、移动电话、软件电话、IP-PBX设备，等等），但可以是任意的允许SIP的设备。

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Further more, we elaborated the open source Asterisk specifically, which has good flexibility and scalability. In order to achieve the service expansion of IP-PBX, we should open appropriate architecture and interface, load and configure some related plugins and modules.

另外，对开源的PBX软件包asterisk作了具体的阐述，它具有一定的灵活性和扩展性，通过开放相应的架构和接口，加载和配置相关的对应的插件和模块来实现IP-PBX业务的扩展。

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After that, the whole scheme of IP-PBX system based on Asterisk and the implementation frame of its components are presented.

然后给出了基于Asterisk实现IP-PBX通信系统的原理和基本通信的实施方案；

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The Research and Realization of Campus Call Center Based on IP-PBX System

基于IP-PBX系统的校园呼叫中心的研究与实现

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Then, we explored the system and described the specifically implementation method of the IP-PBX communications systems and business applications platform.

然后，对该系统进行了开发实现，从IP-PBX通信系统和业务应用平台各功能模块的角度出发，详细地阐述了系统的实现方法。

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This paper uses the Asterisk software package to build the IP-PBX system on a computer. Using this IP-PBX system integrates with other software server to build the small-middle enterprise communication system.

本文采用开源的软件包-Asterisk，在一台计算机上来搭建了IP-PBX系统，同时对IP-PBX系统同其它软件服务器相融合来组建中小型公司的多种用途的通信系统。

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Research and Design of IP-PBX Call Routing System

IP-PBX呼叫路由体系的研究与设计

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Finally, summarized this paper, and pointed out that call center based on IP-PBX system direction of further work.

最后，对论文的各项工作进行了总结，并指出了基于IP-PBX系统的呼叫中心的进一步工作方向。

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IP-PBX is one of the hottest research directions in recent computer telecommunication integration domain. How to provide QoS guarantee becomes a key technique for real time communications in IP-PBX system.

IP PBX（IP专用交换机）系统是近年来计算机网与传统电话系统技术融合领域的研究热点，而如何在IP PBX系统中提供有QoS（服务质量）保证的实时通信能力成为一个关键技术。

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Enterprise IP Telephone Network Principle Based on IP-PBX and Its Solution

基于IP-PBX的企业IP电话网原理及实现

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Results: Biejia decoction of the need to enable the mouse liver neoplasms 22 would reduce, suppress tumor growth, high, medium and low group rates are 56.66%, 48.11%, 40.88% on average rate restraining tumor;

结果：鳖甲煎丸化裁能使肝癌22荷瘤小鼠的瘤重减小，抑制肿瘤的生长，高、中、低组的平均抑瘤率分别为56.66%、48.11%、40.88%；

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Through various indicators of the pilot study to observe and discuss what decoction of the high, medium and Low doses in the treatment of liver cancer 22 if three decoctions mouse animal model tumors role and merits of the differences.

通过对本实验各种指标的观察和研究来讨论鳖甲煎丸化裁高、中、低3个剂量在治疗肝癌22荷瘤小鼠动物模型肿瘤作用中的差异及优劣程度。

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Conclusion: Biejia decoction of the need to clear decoctions contain 22 Dutch neoplasms mouse liver tumor growth, the role of the mechanism may be enhanced if the body fluids neoplasms mouse immune cells and immune functions of functions.

结论：鳖甲煎丸化裁能明显抑制肝癌22荷瘤小鼠肿瘤的生长，其作用机制可能是增强荷瘤小鼠的体液免疫功能和细胞免疫功能。

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Objective: Discuss the effect of Biejia decoction to 22 Dutch neoplasms mouse liver tumor animal models on the rate of inhibiting tumor and the impact of Tlymphocyte subgroups.

目的：研究鳖甲煎丸化裁对肝癌22荷瘤小鼠动物模型肿瘤抑瘤率、T淋巴细胞亚群的影响。

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