Backup method capable of keeping consistent state in soft switch and gateway device

Abstract

The invention discloses a backup method capable of keeping consistent state in a soft switch and a gateway device, belonging to the data backup methods in the communication field. In the method, a primary side soft switch sends unsteady state terminal redundant data or steady state calling redundant data to a backup side soft switch according to the transition condition of the terminal state, andthe backup side soft switch processes the data correspondingly and stores the state information of the terminal through a terminal state mapping table so as to ensure that the terminal state stored in the soft switch is consistent with the actual state of the gateway terminal device, and consequently ensure the communication to run smoothly; the method quickly and effectively solves the problem of inconsistency of the terminal state in the soft switch and the gateway caused by the unsteady calling in a primary-backup switching process, which cannot be solved by the conventional 1+1 hot backupmethod, so that the consistency of the terminal state in the soft switch and the terminal state of the gateway device is ensured, particularly, in the primary-backup switching process, the terminal can resume services as soon as possible.

Description

technical field [0001] The invention relates to a data backup method in the communication field, in particular to a backup method for keeping the terminal states of a soft switch and a gateway device consistent. Background technique [0002] The next generation network (NGN) with softswitch as the core is an inevitable trend of future communication development. Compared with traditional circuit switching, the softswitch network adopts the technology of separating call control and bearer, and the processing capability of network equipment is greatly improved. The capacity of softswitches and various gateways can be made very large. The advantages of exchange, but it also faces more security threats. As the core of call and control in the next-generation network, the soft switch will cause a wide range of communication failures and have a very large impact on the entire network if there are problems or failures in the equipment. In order to realize the high availability of t...

AI Technical Summary

Problems solved by technology

[0003] 1+1 hot backup eliminates the redundancy of unsteady call information and realizes efficient backup, but it also has the following disadvantages: when a call is switched in an unsteady softswitch, the , causing the soft switch to think that the terminal is in an idle state, while the gateway thinks that the terminal is in an occupied state, resulting in an inconsistency between the state of the terminal saved by the soft switch and the gateway

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