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Received:September 13, 2010 Revised:October 16, 2010
Received:September 13, 2010 Revised:October 16, 2010
中文摘要: 组呼作为专有通信系统中的特有功能，在公共服务、生产活动等领域具有重要的现实意义。通过对组呼功能的分析和研究，提出了基于SIP 信令协议的IP 组呼模型；针对专有通信系统中的调度要求及组呼特性，采用多种机制完善了组呼的实现；最后给出了系统的设计方案，具体说明了组呼的实现流程。该方案克服了原有组呼方式的缺陷，具有更好的实用性。
Abstract:As the feature of the private communication system, group call has significance in practice. After analyzing
and researching the function of group call, this paper proposed the structure of group call based on SIP. According to the
requirements of dispatch in the private communication system, and the features of group call, improved its
implementation by several measures. At last，designed the system and described the flow of group call. The programme
has overcomed the shortages and achieved better practicability.
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基金项目:科技型中小企业技术创新基金(09C26214301991)
引用文本：
赵兴,王玲,江志勇.基于SIP 协议的组呼功能分析与实现.计算机系统应用,2011,20(6):69-72,37
ZHAO Xing,WANG Ling,JIANG Zhi-Yong.Analysis and Implementation of Group Call Based on SIP.COMPUTER SYSTEMS APPLICATIONS,2011,20(6):69-72,37
赵兴,王玲,江志勇.基于SIP 协议的组呼功能分析与实现.计算机系统应用,2011,20(6):69-72,37
ZHAO Xing,WANG Ling,JIANG Zhi-Yong.Analysis and Implementation of Group Call Based on SIP.COMPUTER SYSTEMS APPLICATIONS,2011,20(6):69-72,37
