Method and device for actively establishing connection between signaling gateway and application server process

Abstract

The invention discloses a method and a device for establishing link between a signaling gateway in an H.248-based NGN network and a second application server process. In the invention, the signaling gateway actively transmits a substitution request message to the second application server process to request the second application server process to replace a first application server process (activated) to be connected with the signaling gateway (activated). After receiving the substitution request message, the second application server process transmits an activation feedback message to the signaling gateway. After receiving the activation feedback message, the signaling gateway transmits an acknowledgment message corresponding to the activation feedback message to the second application server process. Subsequently, the signaling gateway transmits a substitution informing message to the first application server process to inform the substitution of the first application server process. The problem that a signaling processing process is interrupted or the signaling is lost due to the passive connection establishment between the signaling gateway and the second application server process in the prior art can be solved.

Description

technical field [0001] The present invention relates to the NGN network based on the H.248 framework, in particular to the signaling gateway, the media gateway and the application server process in the NGN network based on the H.248 framework. Background technique [0002] In the ISDN access network to the next generation network (NGN, NextGenerationNetwork) based on H.248 architecture, ISDN signaling is transmitted to the application server process (ASP, ApplicationServerProcess) through the signaling transport protocol (SIGTRAN, SignalTransport), and the media gateway (MG, MediaGateway) is controlled by a media gateway controller (MGC, MediaGatewayController), and the application server process cooperates with the media gateway controller to perform signaling processing. [0003] Consider backup issues such as figure 1 As shown, in the existing NGN network based on the H.248 architecture, the first application server process and the first media gateway controller are in t...

AI Technical Summary

Problems solved by technology

Before the second application server process is activated, the signaling is still sent to the first application server process, and at this time the first media gateway controller may have failed, and the media gateway is trying to connect to the second media gateway controller, Therefore, signaling handled by the first application server process may be lost

[0021] Moreover, in this method, the second application server process needs to be triggered to send an ASPActive message according to the instruction message from the second media gateway controller to actively replace the first application server process, and this requires the application server process and the media gateway controller very complex cooperation between the

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