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发明授权
CN101557603B 一种合法监听的方法、装置和系统 失效 - 权利终止

一种合法监听的方法、装置和系统
摘要：
本发明实施例公开了一种合法监听的方法、装置和系统。其中方法的实现为：接收与被监听用户相关的呼叫建立请求；确定当前呼叫是否为H.324视频呼叫；如果是H.324视频呼叫，则与SBC进行信令交互，建立传输链路，SBC与监听中心的RTSP服务器进行信令交互，建立传输链路；接收到H.324视频数据后，通过建立的传输链路将H.324视频数据发送至SBC，由SBC完成H.324数据到RTSP数据的格式转换，将转换后的数据通过SBC与监听中心MC的RTSP服务器之间的传输链路发送给监听中心。通过在边界会话控制器对视频媒体进行转换和发送到监听设备，实现了视频的监听，MC不用进行升级，即可实现视频监听。
摘要（英）：

The embodiment of the invention discloses a method, a device and a system for lawful monitoring; wherein the method comprises the steps of: receiving a call setup request related to a monitored user, determining if the current call is an H.324 video call, establishing a transmission link by having a signaling interaction with an SBC which establishes a transmission link by having a signaling interaction with an RTSP server of a monitoring center if the current call is an H.324 video call, sending the received H.324 video data to the SBC by the built transmission link so as to cause the SBC toconvert the H.324 data into RTSP data and sending the converted data to the monitoring center by the transmission link between the SBC and the RTSP server of the monitoring center (MC). By convertinga video media in a session border controller and sending the converted video media to a monitoring device, video monitoring is realized and the MC can realize video monitoring without upgrading.

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