Gateway Switch Routing Special Number Calls via Temporary Numbers
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Solution Overview
Problem
Special number calls, such as emergency service calls, are typically routed through dedicated trunks, incurring high installation and maintenance costs, and there is a need to route these calls through common telecommunication networks while maintaining security.
Innovation Solution
A method and system that utilize a switching center and a gateway switch within a common telecommunication network to route special number calls by associating the call information with a temporary number, allowing the call to be routed through the network to the appropriate answering position, and employing this temporary number for routing, which can be reused for subsequent calls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated trunks are used for routing special number calls, then security and reliability of call routing is improved, but installation and maintenance costs increase
Solution Approach 1:
The patent introduces a gateway switch as an intermediary component that mediates between the common telecommunication network and the special number answering positions. This gateway switch implements security functions and call routing logic, allowing special number calls to be routed through common trunks while maintaining the security and reliability previously provided by dedicated trunks. The gateway switch acts as a mediator that translates and controls call routing without requiring separate dedicated physical paths.
Solution Approach 2:
The patent makes common telecommunication network infrastructure serve multiple purposes: it handles both regular calls and special number calls (emergency, operator, etc.) that previously required dedicated trunks. By implementing intelligence at the gateway switch level, the common network infrastructure gains the capability to securely handle specialized call types, eliminating the need for separate dedicated networks and reducing overall system complexity and cost.
2Ease of manufacture
If common telecommunication networks are used for special number calls, then installation and maintenance costs are reduced, but call routing security and reliability may deteriorate
Solution Approach 1:
The gateway switch serves as a security intermediary that filters, validates, and routes special number calls through the common network. It implements security policies, verifies call authenticity, and ensures proper routing to answering positions, thereby maintaining call routing security even though calls traverse shared network infrastructure rather than dedicated secure channels.
Solution Approach 2:
The system performs preliminary security validation and routing determination at the gateway switch before calls are fully processed through the common network. By pre-establishing security checks and routing decisions, the system ensures that only authenticated special number calls are routed, and they are directed to appropriate answering positions, maintaining reliability throughout the call lifecycle.
3Productivity
If temporary numbers are used for routing special number calls, then network resource utilization is improved, but system complexity increases
Solution Approach 1:
The patent implements a temporary number allocation system where unique temporary numbers are assigned to special number calls for routing purposes, then discarded after the call is completed. These temporary numbers are recovered and reused for subsequent calls, maximizing network resource utilization. The gateway switch manages the allocation, tracking, and reuse of temporary numbers, transforming a potentially complex resource management problem into an efficient reusable resource system.
Data Source
AI summary
A method for routing a special number call to an appropriate answering position using a common telecommunication network includes: (a) placing an extant special number call to a switching center; (b) ascertaining the appropriate answering position for receiving the extant call; (c) providing to a gateway switch call-information for routing the extant call to the appropriate answering position; (d) in no particular order: (1) associating the call-information with a temporary number; and (2) providing the temporary number to the switching center; (e) employing the temporary number as a called party number for routing the extant call through the network to the gateway switch; and (f) operating the gateway switch to employ the call-information associated with the temporary number for routing the extant call to the appropriate answering position.