Network system and method for processing VOIP business based on media net-link control protocol

Abstract

The system comprises following pats. (1) Through Internet connected media gateway controller (MGC) and media gateway (MG). (2) Customer station set connected to media gateway. (3) Located between MGC and MG, media gateway control protocol application layer gateway (MGCP ALG) capable of carrying conversion of network address based on MGCP protocol. (4) Signaling interaction between MGC and MG is carried out through MGCP protocol; data exchange of voice media flow between MGs is carried out through RTP / RTCP protocol; MG connected to MGCP ALG is utilized to collocate IP address of private network. The scheme solves issue that current network consumes too many IP addresses of public network. Meanwhile, effect of MGCP ALG firewall avoids MG suffering attack from Internet directly.

Description

technical field [0001] The present invention relates to a processing network of Voice over Internet Protocol (VoIP) service and a method for processing the service, in particular to a processing method and network system for VoIP service based on Media Gateway Control Protocol (MGCP). Background technique [0002] The IP phone based on the MGCP protocol is one of various VoIP technologies, which is easy to implement in the equipment, through which users can conduct voice communication directly through the IP network. figure 1 It is an existing network diagram based on the MGCP protocol for processing VoIP services. The media gateway (MG) in the figure has a public network IP and is directly connected to the Internet (Internet). Through the Internet, the MGCP protocol communicates with the media gateway controller. (MGC) performs service data interaction, and MGs perform data interaction through real-time transport protocol and real-time transport control protocol (RTP / RTCP)....

AI Technical Summary

Problems solved by technology

[0003] It can be seen from the above that in the existing network for processing VoIP services, the user-side device MG must have an IP address, that is, directly use the public network IP to connect to the Internet. In this way, when the volume of VoIP services based on MGCP is large, Use a large number of MG devices, resulting in the consumption of a large number of IP addresses

Moreover, once the MG occupies the IP address, it usually will not release the IP for a long time, because the MGCP-based IP phone is usually "online" for 24 hours like the public switched telephone network (PSTN) phone. At present, the public network IP is relatively tight, causing new waste

In addition, the IP address of the MG appears directly on the Internet. Since the MG usually has no protection measures, it is vulnerable to attacks from the Internet.

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