Telecommunication Redirect System for Disaster Call Routing
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Solution Overview
Problem
Telecommunication networks face capacity limitations and service disruptions during high call volumes, especially during disasters, leading to incomplete calls and inaccessible emergency communication lines due to overwhelmed or inoperable switches.
Innovation Solution
A method and system that redirect calls from one subscriber number to a modified subscriber number within the network, using an application server to manage and configure the network connections, allowing calls to be rerouted even when the primary switch is inoperable, and prioritizing critical communications based on authentication and status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network capacity is increased to handle high call volumes, then the ability to complete calls during disasters is improved, but the cost and complexity of the network infrastructure increases
Solution Approach 1:
An application server is introduced as an intermediary component between switches and subscriber devices. The application server receives redirect requests from switches, processes the redirect logic, and returns redirect commands to complete calls. This intermediary handles the complexity of disaster recovery routing centrally, allowing individual switches to remain relatively simple while achieving reliable call completion during disasters.
2Adaptability or versatility
If conventional call forwarding is used to redirect calls during switch failures, then call routing flexibility is improved, but the system becomes unavailable when the serving switch is inoperable
Solution Approach 1:
The application server acts as a central intermediary that receives redirect requests from any switch in the network, not just the serving switch. When a switch fails, the application server can still process redirect requests from other switches and route calls appropriately. This centralization ensures the system remains available and adaptable even when individual switches become inoperable.
3Reliability
If the network routes calls through multiple switches during disasters, then the ability to maintain connectivity is improved, but call completion time increases
Solution Approach 1:
The system performs preliminary actions by pre-establishing redirect request handling capabilities at the application server before disasters occur. When a disaster strikes and calls need to be routed through multiple switches, the application server is already prepared to quickly process redirect requests and return commands, minimizing the time penalty of additional routing steps.
4Productivity
If switch capacity is increased to handle more simultaneous calls, then network throughput is improved, but the cost of additional hardware increases
Solution Approach 1:
The application server provides multi-functional capabilities, handling both normal call routing and disaster recovery redirect operations through a single centralized system. This universal approach allows the network to maintain adequate throughput for normal operations while handling disaster scenarios without requiring separate specialized hardware for each function, thereby controlling hardware costs.
Data Source
AI summary
Provided is a method that includes receiving a redirect request from one or more switches of a telecommunications network, receiving, from one or more switches of the telecommunications network, a connect request that requests connection of a transmitter device to a receiver device associated with the normal subscriber number, and configuring the telecommunication network to connect the transmitter device to a receiver device associated with the modified subscriber number, independently of the switch serving the normal receiver device being operable or inoperable. The redirect request comprises a normal subscriber number and a modified subscriber number.