Network terminal audio internal and external intercommunication system and method

Abstract

The invention discloses a network terminal audio internal and external network intercommunication system and method. The network terminal audio internal and external network intercommunication systemcomprises an internal and external security gateway, wherein the internal and external network security gateway is composed of an internal and external network separated signaling gateway SGW and an internal and external network separated media gateway MGW; the SGW is divided into an external network signaling gateway SGW-A and an internal network signaling gateway SGW-B; the MGWs are respectivelydeployed in an external network and an internal network; the SGW-A and the SGW-B cooperate to realize SIP signaling interaction; the MGWs are divided into an external network media gateway MGW-A andan MGW-B internal network media gateway which are respectively deployed in the external network and the internal network; and the MGW-A and the MGW-B realize real-time media stream intercommunicationthrough an E1 board card. According to the network terminal audio internal and external network intercommunication system, the external security gateway and the internal security gateway are deployedin the information intranet and the information extranet, and the innovative application of the information security isolation device is matched, so that the security access of the existing network signaling stream and media stream of the mobile internet terminal society is realized.

Description

technical field [0001] The invention belongs to the technical field of network terminal audio calls, and in particular relates to a network terminal audio internal and external network intercommunication system and method. Background technique [0002] With the increase of office business on the extranet, the demand for mobile calls is also increasing. Therefore, it is necessary to extend the call service of the administrative switching network of the State Grid Corporation of China to the extranet, expand the scope of use, and realize the intercommunication between intranet and extranet terminals. However, because the internal and external network of the State Grid Corporation of Information is safely isolated through the isolation device, it is necessary to implement quasi-real-time ferrying of internal and external network data in the form of IP blocking, resulting in the inability of external network terminals based on IP links to access the company's administrative switc...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a system and method for intercommunicating network terminal audio and internal networks, solve the problem of external network terminals accessing the internal IMS core network, and realize the signaling flow of external network terminals for multimedia communication services and secure access to media streams

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