Method and system for implementing voice listen of next generation network

Abstract

The present invention discloses a method which can realize the voice monitoring of next-generation network, and a system thereof. The system comprises a media gateway, a media server, and a soft switching and monitoring center. The method comprises adopting the conference communication function provided by the media server to arrange the calling terminal, the called terminal and the monitoring terminal in the same conference. The method and the system save the investment costs of the equipment, adopt the digital delay monitoring channel of the circuit domain of the original public exchange telephone network, require no additional net element equipment which is used in the bypass of the IP media, and adopt the net element of the media server of the next-generation network. The H248 protocol needs no expansion; the calling topology of the calling party and the called party needs no correction; no special monitoring calling process is needed; the original equipment of the public exchange telephone network can be fully applied in the development of the public exchange telephone network towards the next-generation network; the method and the system improve the utilization efficiency of the equipment of the net element of the next-generation network, simplify the development process, and thus enhance the investment yield.

Description

technical field [0001] The invention relates to the field of NGN (Next Generation Network) network communication, more specifically, a method and system for realizing NGN network voice monitoring. Background technique [0002] Lawful interception refers to the law enforcement act of intercepting the communication services of public communication networks carried out by law enforcement agencies in accordance with national laws and approved by authorized agencies. [0003] In a traditional PSTN (Public Switched Telephone Network: Public Switched Telephone Network) network, the monitoring function is implemented in the circuit domain through a connection between a digital trunk line and a program-controlled switch. After the PSTN network evolves into an NGN network, the NGN network is generally composed of network elements such as software switches, media gateways, and media servers. The NGN network with the monitoring function generally needs a monitoring center and a softswit...

AI Technical Summary

Problems solved by technology

In the prior art, special grouping devices are generally added as network elements for bypassing IP media streams, or IP ports for bypassing media streams are added. At the same time, it is necessary to expand the H248 protocol, modify the call topology, and formulate special monitoring The call flow is implemented on the IP network to realize the monitoring function of the NGN network, which is more complicated to implement, and cannot make full use of the original equipment of the PSTN network, resulting in waste

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