基于下一代网络(NGN)的远程多级监控系统迎合了网络融合的趋势.基于SIP协议、视频网关编解码技术,为各种SIP路由器及用户代理端产品设计了指令系统,实现了流媒体传输、视频采集和指令下发等操作,系统在进行数据传输及控制时建立了双向双通道,保证了不同资源的分流,更有效地利用了设备服务和网络通信.%The remote multi - stage monitoring system based on the NGN plays up to the amalgamation of the network. Based on SIP protocol and video gateway decoding technology, instruction system is designed which realizes streaming media transmission, video collection and instructions issue for SIP router and all kinds of UA product. In the process of data transmission and control, the system establishes the two - way double transmission channel, which ensures more effectively the different equipment services and network communication by separating instructions resources.
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