Switch Network Security Protection Against Service Interruption
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Solution Overview
Problem
Current switch network solutions fail to prevent complete service interruptions between large districts in a first-class toll network constituted by soft switches when a TMG fails or office-directed trunks are fully blocked, as they do not account for route failures at the opposite end.
Innovation Solution
A method and apparatus that analyze the route condition from the selected sub-route to the opposite-end device, reporting blocking messages and excluding failed sub-routes, allowing for the selection of alternative routes to ensure continuous service, implemented through a transmitting-end device, trunk device, and soft switch with modules for sub-route selection, analysis, and call control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If equipment redundancy solutions are used to prevent service interruption, then reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies preliminary action by having the transmitting-end device pre-select multiple sub-routes before service interruption occurs. When the primary route fails, the system can immediately switch to a pre-identified alternative route without requiring complex real-time route selection mechanisms, thus maintaining service continuity while avoiding the need for sophisticated redundant equipment
Solution Approach 2:
The patent implements feedback by having the trunk device detect route conditions and send blocking messages back to the transmitting-end device when service interruption is detected. This feedback mechanism enables the system to dynamically adjust route selection based on real-time network status, ensuring service continuity through intelligent routing rather than complex hardware redundancy
2Reliability
If multiple sub-routes are configured for failover, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the transmitting-end device to automatically select and switch between sub-routes based on feedback from the trunk device without requiring manual intervention or complex centralized control. The system autonomously manages route failover by receiving blocking messages and independently selecting alternative routes, simplifying the overall device complexity while maintaining high reliability
Data Source
AI summary
Embodiments of the present invention provide a security protection method and apparatus for performing security protection during service interruption occurring in a switch network. In an embodiment of the present invention, a transmitting-end device selects each sub-route from a plurality of sub-routes one by one to transmit a call to an opposite-end device; when a trunk device receives the call, it analyzes a route condition from the current selected sub-route to an opposite-end device; the trunk device determines whether to transmit the call to the opposite-end device or report a blocking message to the transmitting-end device according to the route condition; if the transmitting-end device receives the blocking message, then the transmitting-end device excludes the current selected sub-route, judges whether all the sub-routes are excluded, and determines whether to continue selecting a next sub-route or end selecting the sub-routes according to the judgment result.