Lawful interception method for internetwork telephone domain and system thereof
A technology of legal interception and telephone domain, applied in the field of communication, can solve the problems of inconvenient centralized management of legal interception function and high cost of operator's internal server transformation, and achieve the effect of saving cost, improving performance and improving communication performance
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[0067] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0068] One of the core ideas of the preferred embodiment of the present invention is: first, utilize the SBC to realize the intercommunication of many VoIP operators based on the SIP protocol, intercept and analyze the received SIP signaling at the SBC, and then analyze the SIP signaling related to the legally intercepted user. The order is modified, repackaged for routing, and then the real-time interception of RTP media stream can be realized through the legal monitoring module added to the routing function of SBC. Specifically, the present invention utilizes the feature of SBC to realize trusted intercommunication among numerous VoIP operators to implement legal interception, that is, all VoIP operators based on the SIP protocol...
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