这是一份介绍SIP协议的PPT，详细介绍了SIP协议，可以帮助SIP开发人员理解SIP协议各个消息中的头域，以及应用流程。-this is a point for the sip, it introduces the protocol of sip, it can help for programer for understanding the part 下载
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非常适合初学者了解SIP协议整体结构框架和功能的ppt资料-very suitable for beginners to understand SIP framework of the overall structure and function of information ppt 下载
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Sip 协议越来越受到重视，如何学好Sip，这里提供了一份介绍SIP协议的PPT，详细介绍了SIP协议。-increasing importance has been how to learn Sip. here to provide a paper on the PPT SIP agreement, the details of SIP. 下载
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SIP协议的一个powerpoint，很全面的介绍，很漂亮的ppt。- 下载
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网络协议分析和实现 北邮教学课件 希望学习sip的朋友可以看看-network protocol analysis and the realization Beijing University of Posts and Telecommunications Courseware hopes to learn sip friends can see 下载
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