| 基于双网融合的话音无堵塞可视电话系统设计 |
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| 引用本文： | 李洛,吴绍根,廖永红,陈建国.基于双网融合的话音无堵塞可视电话系统设计[J].广东轻工职业技术学院学报,2008,7(3):1-4. |
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| 作者姓名： | 李洛 吴绍根 廖永红 陈建国 |
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| 作者单位： | 1. 广东轻工职业技术学院,广东,广州,510300
2. 广州泛网视讯科技有限公司,广东,广州,510300 |
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| 基金项目： | 广东省科技计划项目:新一代话音无堵塞多媒体可视电话系统 |
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| 摘 要： | 现有的可视电话系统将话音及视频数据通过IP宽带数据网络进行传输。由于IP数据网络所固有的流量突发特性，将对实时性要求很高的话音数据造成间续性的话音堵塞延时，使话音质量难以得到保证。基于网络融合技术将话音数据在PSTN网络上传输、将视频数据在IP数据网络上传输，并通过同步协议保证话音与视频的同步，可以在保证话音数据无延时传输的同时得到相对稳定的视频流。测试结果表明，话音与视频数据同步延时小于50ms。
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| 关 键 词： | 可视电话 无堵塞 话音视频同步 H.264 |
Design of Voice Blockless Video Telephone Based on Dual Network |
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| LI Luo,WU Shao-gen,LIAO Yong-hong,CHEN Jian-guo.Design of Voice Blockless Video Telephone Based on Dual Network[J].Journal of Guangdong Industry Technical College,2008,7(3):1-4. |
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| Authors: | LI Luo WU Shao-gen LIAO Yong-hong CHEN Jian-guo |
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| Institution: | LI Luo WU Shao - gen LIAO Yong - hong CHEN Jian - guo (Department of Computer Engineering, Guangdong Industry Technical College, Guangzhou 510300, China; Guangzhou FinePhon Technology Co. Ltd, Guangzhou 510300, China) |
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| Abstract: | Traditional video telephone transports voice data and video data on IP network. IP network is a burst network, which could block voice transportation on unpredictable times and make the service quality unsatisfactory. Based on the dual- network combination, which transport voice data on PSTN network and video data on IP network, and a synchronization protocol is defined to synchronize the voice data and video data, the proposed schema in this paper could transport voice data in a blockless way with a satisfactory video stream. Test shows that the synchronization time of voice and video is lower than 50ms. |
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| Keywords: | H 264 |
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