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Data flow redirection based VOIP/NGN monitoring, inspecting method and system

A monitoring system and redirection technology, applied in the field of communication networks, can solve problems such as VOIP/NGN monitoring and recording difficulties

Inactive Publication Date: 2008-01-30
VIXTEL TECH BEIJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to monitor the entire network without omission, it is necessary to install a lot of packet capture devices in different locations and on different lines, which makes the monitoring and recording of VOIP / NGN very difficult

Method used

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  • Data flow redirection based VOIP/NGN monitoring, inspecting method and system
  • Data flow redirection based VOIP/NGN monitoring, inspecting method and system

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Embodiment Construction

[0025] The VOIP / NGN monitoring and monitoring method and system based on data stream redirection provided by the present invention will be described in detail below in conjunction with the accompanying drawings, but this does not constitute a limitation to the present invention.

[0026] With reference to Fig. 1, the present invention is based on the VOIP / NGN monitoring of data flow redirection, monitoring system, comprises a signaling agent equipment and an RTP switching equipment, and signaling agent equipment is deployed between softswitch equipment and VOIP / NGN user, The RTP switching device is provided with a recording device, and the signaling proxy device SignalingProxy directly captures the signaling from the line, relays the signaling, and detects the signaling. If the user number in the signaling or The IP address is not the monitoring target, then the signaling interaction is carried out normally, if the user number or IP address in the signaling is the monitoring ta...

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Abstract

The invention provides a VOIP / NGN sniffer, monitoring method and system based on the data flow redirection. By that whether the signaling proxy of the monitoring system or the number or IP address of the application server checking user call signaling is the monitoring aim or not, the method changes the call belonging to the monitoring aim, and the RTP address or port of the response signaling SDP to the address or port of an RTP changeover equipment assigned by the monitoring system. The RTP changeover equipment is noticed to open the port to receive the media data flow produced by the use talking. The RTP changeover equipment can copy and save the media data flow produced by the user talking or compose the media data flow to be a sound file which is used by the judicial executive mechanism (LEA). The invention compulsorily directs the media data flow which needs to be monitored to the RTP turnover point where the monitoring equipment is. The RTP media data flow of the monitoring aim of the different geographical positions which realizes the unification of the sniffer and monitoring to the users who distributes in the different geographical positions and media gateways.

Description

technical field [0001] The invention belongs to the technical field of communication networks, and in particular relates to a VOIP / NGN monitoring and monitoring method and system based on data flow redirection. Background technique [0002] Currently IP-based voice and media technologies, communication networks that control signaling via SIP and H.248 and transmit via RTP are becoming more and more popular. With the wide application of VOIP / NGN system, the function of monitoring and recording media content such as voice of VOIP / NGN users is becoming more and more important for national security and public security departments. Traditionally, recording of VOIP voice is carried out by installing a data packet capture tool on the transmission line of VOIP voice RTP data flow. However, in a large VOIP / NGN network, there are many RTP voice transmission paths and voice gateways. In order to monitor the entire network without omission, it is necessary to install a lot of data pac...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L12/56H04M7/00H04W28/16
Inventor 岳勇
Owner VIXTEL TECH BEIJING CO LTD
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