| SIP多域系统及其呼叫路由查询研究 |
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| 引用本文： | 沈庆国,李小明,王滨.SIP多域系统及其呼叫路由查询研究[J].军事通信技术,2010(1). |
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| 作者姓名： | 沈庆国 李小明 王滨 |
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| 作者单位： | 解放军理工大学通信工程学院电信工程系;解放军理工大学通信工程学院研究生3队;解放军理工大学通信工程学院研究生2队; |
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| 摘 要： | 简单的IP电话系统只有一个SIP管理区域,复杂的IP电话系统则可以有多个SIP管理区域。文章提出了SIP多域系统的总体结构,系统分析了基于DNS的呼叫路由机制及其不足,给出了基于P2P的最差两跳呼叫路由查询算法,在典型话务模型下对算法进行的定量分析表明,呼叫路由处理效率得到有效提高。
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| 关 键 词： | 会话初始化协议 多域 对等网络 最差两跳查询 |
SIP Multi-domain System and Calling Route Query |
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| SHEN Qing-guo,LI Xiao-ming,WANG Bin.SIP Multi-domain System and Calling Route Query[J].Journal of Military Communications Technology,2010(1). |
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| Authors: | SHEN Qing-guo LI Xiao-ming WANG Bin |
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| Institution: | 1.Department of Telecommunications Engineering ICE/a>;PLAUST/a>;Nanjing 210007/a>;China/a>;2.Postgraduate Team 3 ICE/a>;3.Postgraduate Team 2 ICE/a>;PLAUST |
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| Abstract: | There is only one SIP domain in the simple IP telephone system, while the complex IP telephone system could include more domains. The architecture of multi-domain SIP system was improved and the DNS-based call routing mechanism and its shortcoming were analyzed systematically. The algorithm of better-than-two-hop route query based on P2P was given. Quantitative analysis in the model of typical call indicates that the efficiency of call routing process has been effectively enhanced. |
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| Keywords: | SIP multi-domain P2P better-than-two-hop query |
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