| With the construction of China Mobile's 3G network, Liaoyuan mobile communication core network switching from the traditional TDM network replaced Alcatel Spatial comprehensive softswitch network. Softswitch as NGN (next generation network) control core equipment, asking them to be highly reliable, off-site disaster recovery is to ensure reliable operation of soft-switched network is one of the most effective way.This paper discusses the remote disaster recovery Liaoyuan softswitch implementation of principles and key technologies, such as: How standby softswitch data synchronization? Remote disaster recovery work status softswitch how to switch? Dual-homed and dual-link soft-switching capacity in the What is the role of what disaster? dual ownership and dual-link how to quickly switch between the physical level? For each problem, we have provided a clear solution. Also to Liaoyuan Alcatel Spatial Atrium 5020 softswitch as the basis for disaster recovery testing, network disaster recovery plan by the two test comparing the two types of disaster recovery solutions for both the effectiveness and timeliness of a more comprehensive understanding, to find the best means of settlement as a basis for proposed based on the current situation of Liaoyuan mobile softswitch equipment, the overall technical solution and implementation to ensure the stable operation of Liaoyuan mobile communication network for mobile users Liaoyuan 700,000 to provide security reliable communication services for mobile Liaoyuan profitable, but also produced a huge social benefits.The main thesis is divided into theoretical introduction, the overall design, key technology, experimental comparison of four parts:1. Theoretical Introduction Part I: The concept of soft switching, the main features, basic principles, network architecture, etc. are introduced. But also on the Alcatel Spatial Atrium 5020 Atrium 7515 soft switches and media gateways are introduced.2. Part of the overall design: According to Liaoyuan demand for mobile off-site disaster recovery for remote disaster recovery solutions Softswitch analysis. Divided into 1 +1 standby program, N +1 standby program, each standby of 1 +1, MSC POOL programs. 3. The key technical part: According to Alcatel softswitch and media gateway hardware features of a remote disaster recovery of the four key technology, data synchronization technology standby, standby working state switching technology, dual-homed dual-link technology, intelligent DDF frame technology.4. Experimental Comparison of parts: Liaoyuan mobile environment under the conditions allowed, switching on the 1 +1 and N +1 switching to a disaster recovery exercise, and were compared to the switching time, obtained on the experimental comparison of experimental results.Liaoyuan thesis mobile network development, combined with Alcatel Spatial Softswitch products, through in practice, 1 +1 and N +1 disaster recovery program in the mobile production environment Liaoyuan feasibility of the application. Paper are summarized as follows:Soft-switching technology simply means that the traditional independence of the switching module is a physical entity, known as the soft switch (SS), SS main function is to complete the edge of the access layer in the operational control of all media gateways and media network communication between the relevant control. Liaoyuan mobile softswitch products by Alcatel Spatial Atrium 5020, and its remote disaster recovery of soft switch settings in Changchun, remote disaster recovery to achieve soft-switching exchange must meet the following requirements:1. In response to the sudden emergency communications network failure, failure to reduce the losses caused by soft switching switching must be completed within a very short time, timely recovery of communications services.2. Standby switch configuration to achieve real-time data such as signaling link online synchronization.3. Standby switch should be able to judge the work of the state, when a fault occurs, can be done promptly notify the maintenance personnel to determine whether the implementation of switching treatment, reduce the fault duration.4. Standby switch should be able to quickly complete all the physical link Mc port switch, reducing the impact of business interruption.The end of the paper summarizes the advantages of soft-switching network, remote disaster recovery backup system illustrates the construction of the development trend of technology. Finally the combination of a variety of programs, will become an effective and more secure way of disaster recovery. |
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