E-911 Call Routing via Analog Line Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing telephone systems may delay or misdirect emergency responses when a user dials 911 without selecting the analog line, especially when the enterprise ICP system is in a different PSAP coverage area or lacks accurate location information for the telephone set.
Innovation Solution
A method that automatically detects an emergency call and routes it through local E-911 call routing on the analog line if available, ensuring support for local E-911 call handling without user intervention, while preventing false detections and integrating with existing system E-911 call routing mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the enterprise ICP system is used for E-911 call routing, then system E-911 notification and functionality are maintained, but the emergency response may be delayed or misdirected when the ICP is in a different PSAP coverage area or lacks accurate location information
Solution Approach 1:
The system performs preliminary detection of E-911 dialing sequences before the call is fully routed, allowing it to proactively intervene and redirect the call to local E-911 routing. This提前 action ensures that the correct routing path is selected before the call progresses, preventing delays and misdirection while maintaining system notification capabilities.
2Reliability
If the user manually selects the analog line for local E-911 routing, then accurate local emergency response is achieved, but the user may forget to select the analog line or someone unfamiliar with the procedure may dial emergency calls
Solution Approach 1:
The system automatically detects when a user dials an E-911 sequence and autonomously redirects the call to local E-911 routing through the analog line. This self-service mechanism eliminates the need for user awareness or manual line selection, ensuring that emergency calls are always routed correctly without requiring user knowledge or action.
Solution Approach 2:
The system monitors dialing sequences in real-time and provides immediate feedback by automatically detecting E-911 patterns and redirecting calls accordingly. This feedback mechanism ensures that the system responds appropriately to emergency dialing attempts, correcting any potential routing errors before the call is completed.
3Loss of time
If the system automatically detects and routes E-911 calls through local analog line, then timely emergency response is ensured, but false detection may occur when digits matching E-911 are part of an IVR dialing sequence
Solution Approach 1:
The system monitors all dialing sequences for E-911 patterns, which may include some false positives from IVR sequences. However, this excessive monitoring ensures that no genuine E-911 calls are missed. The system accepts some partial false actions as a trade-off to guarantee detection of all actual emergency calls, maintaining high sensitivity while managing false positive rates.
Data Source
AI summary
A method and system of local call detection and notification are provided for a communication device that communicates with an enterprise system via a secure digital voice connection and locally with the Public Switched telephone system (PSTN) via an analog line. A dialing sequence at said communication device is detected within the enterprise system for which local call routing is to be applied. Call routing is then initiated through the enterprise system and a request message is sent to the communication device that includes the dialing sequence. The request message is received within the communication device, which in response determines availability of the analog line. In the event an analog line is available the communication device sends a response message to the enterprise system for aborting call routing through the enterprise system, and locally dials said the sequence over the analog line. In the event an analog line is not available call routing continues through the enterprise system.