Method and system for realizing the carrier intercommunication based on the virtual relay

Abstract

A method to interconnect bearers based on virtual relay is disclosed. In this method, logic function units are configured with virtual relay data, and logic function control unit configured corresponding calling route and relay information for virtual relay data. The said logic function unit analyses topology and combines the virtual relay terminal in analyse result and other virtual relay terminal or true terminal. At the same time, the corresponding device and system to interconnect bearers based on virtual relay is disclosed also. In this invention, the problem of interconnection among gateways is solved, and the density of physical interface in a gateway need not be decreased, so it is benefit to pure TDM networks. Furthermore, this invention is simple to be deployed and does not rely on telecommunication services.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and system for realizing bearer interworking based on a virtual relay. Background technique [0002] Under the separated architecture, the main bodies of the call control plane and the bearer control plane are MGC (Media Gateway Controller) and MGW (Media Gateway) respectively. The MGW accepts the control of the MGC, and the interface protocol is called the media gateway control protocol, which is defined as the H.248 series specification in Itu-t. [0003] The MGW provides specific bearer resources for calls / sessions. In the H.248 protocol model, Context (context) and Termination (endpoint) are the two most important concepts. Among them, Termination is an abstraction of bearer resources on the MGW, and the gateway assigns an Id to identify it. The MGC uses this Id to refer to and operate on the bearer resources on the MGW. A Termination can be used to identify a TD...

AI Technical Summary

Problems solved by technology

[0014] (3) There is a possibility of bearer intercommunication between Contexts in a VMGW

The biggest disadvantage of using real bearer for intercommunication is the occupation of actual physical bearer resources, resulting in a significant reduction in the port density of MGW equipment, which may be reduced by about half in extreme cases—for example, MGC occupies two contexts on one MGW for each common call When the way is realized

This is an unacceptable loss of specification for the device

On the other hand, the networking is complex, such as the external loopback TDM trunk mode still needs to configure the corresponding trunk cable, resulting in too many redundant wiring

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