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Access gateway disaster recovery method of NGN network

A technology for accessing gateways and networks, applied in data exchange networks, digital transmission systems, error prevention, etc., can solve problems such as failure to tolerate disasters

Active Publication Date: 2010-08-18
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention provides a disaster recovery method for an access gateway in an NGN network, which solves the problem that the traditional PSTN cannot be used for disaster recovery in the prior art. When the link between AGs fails, the basic calling functions of AG users can still be realized

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  • Access gateway disaster recovery method of NGN network
  • Access gateway disaster recovery method of NGN network
  • Access gateway disaster recovery method of NGN network

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Embodiment Construction

[0020] Figure 1 is a schematic diagram of the system structure of AG user disaster recovery under the NGN network environment. As shown in Figure 1, the system includes a home location register (HLR), a soft switch (SS), an access gateway (AG), and a signaling gateway ( SG), trunk gateway (TG), intelligent PSTN tandem switch (integration TandemSwitch, iMS for short), and access end office (LS). Automatically start the built-in SG function. In this system, the ISUP (ISDN USER PART, user part of ISDN signaling) signaling link is used between iMS and TG / AG / LS, the MAP signaling link is used between HLR and iMS / SS, and the link between SS and AG H248 (media gateway control protocol) is adopted between SS and SG, and SIGTRAN (transmission control protocol for transmitting PSTN signaling on IP network) is adopted between SS and SG. The iMS is connected to the disaster recovery AG through the ISUP signaling, and is connected to the home location register through the extended MAP sig...

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Abstract

The invention discloses an access gateway (AG) disaster recovery method in NGN network, for solving the problem that it is unable to make disaster recovery via traditional PSTN in the existing technique, and making it still able to implement AG users' basic calling function when neither of master and backup SS can work, or the link between SS and AG fails IP carrying network. And the method comprises: building signaling route between AG and PSTN tandem office, i.e. iMS, when the calling is an AG user and / or the called is an AG user, the iMS obtains the calling and called user data, and completes call connection of the calling and the called. And the invention provides an effective method for AG users to make disaster recovery via fixed network intelligentized PSTN tandem office, and implements a function that AG users call via PSTN tandem office.

Description

technical field [0001] The invention relates to the field of fixed network NGN, in particular to a disaster recovery method for AG users in the NGN network under the background of network intelligence. Background technique [0002] The telecommunication network is undergoing a revolution, from the traditional TDM (Time Division Multiplexing, Time Division Multiplexing) PSTN network to the all-IP NGN (Next Generation Network) network evolution. The important feature of NGN network is the separation of bearer (MAG--Media Access Gateway) and control (MGC--Media Gateway Control). From the perspective of the entire network structure, in the current network construction, SG (Signal Gateway, signaling gateway) usually It is a master-backup construction. TG (Trunk Gateway, trunk gateway) generally adopts two modes of partition tandem and full tandem, and AG (Access Gateway, access gateway) is only dual-homing, that is, the current AG user belongs to two SS ( SoftSwitch, soft switch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/22H04L12/56H04Q11/04H04Q3/00H04L12/701
Inventor 管卫芝
Owner ZTE CORP
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