Emergency Call Routing Information Feedback to PSAPs
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Solution Overview
Problem
Emergency services networks lack the ability to inform Public Safety Answering Points (PSAPs) whether they are primary or alternate PSAPs and the reason for routing an emergency call, which hinders effective call handling and resource allocation.
Innovation Solution
A selective routing system that provides routing information to PSAPs or alternate answering points indicating the reason for primary or alternate routing of emergency calls, using a packet network to transmit this information and allowing PSAPs to determine their role and handle overflow situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the selective router routes emergency calls to alternate PSAPs when primary PSAPs are unavailable, then call handling capability is maintained, but the alternate PSAPs lack information about their role and the reason for receiving calls
Solution Approach 1:
The selective router provides feedback to alternate PSAPs by transmitting routing information that indicates the reason for alternate routing. This feedback mechanism enables alternate PSAPs to understand their role in handling the emergency call and the status of the primary PSAP, improving their ability to handle calls effectively while maintaining system reliability.
Solution Approach 2:
The selective router acts as an intermediary that not only routes calls but also transmits additional routing information to alternate PSAPs. This intermediary function allows the system to convey information about the primary PSAP's status and the reason for alternate routing, bridging the information gap between the router and alternate PSAPs.
2Productivity
If routing information is provided to alternate PSAPs, then call handling efficiency is improved, but system complexity increases
Solution Approach 1:
The routing information transmission is merged with the existing call routing process. The selective router combines the call routing function with the information transmission function, sending routing information along with the emergency call to the alternate PSAP. This merging approach improves call handling efficiency while minimizing additional system complexity by integrating the new function into the existing infrastructure.
3Duration of action of stationary object
If the selective router monitors PSAP availability and performs alternate routing, then service continuity is maintained, but information about routing decisions is lost
Solution Approach 1:
The selective router performs preliminary actions by monitoring PSAP availability and preparing routing information before actually routing the emergency call. This preliminary monitoring and information preparation ensures that when alternate routing is necessary, the alternate PSAP receives both the call and the relevant routing information, maintaining service continuity while preserving routing decision information.
Data Source
AI summary
Networks, systems, and methods are disclosed for handling alternate routing scenarios for emergency calls or other special number calls, such as a 9-1-1 call. In routing an emergency call, an emergency services network identifies a primary answering point (e.g., a PSAP) to handle the emergency call. If the primary answering point is not available, then the emergency services network identifies an alternate answering point to handle the emergency call, and routes the emergency call to the alternate answering point (if available). The emergency services network also identifies alternate routing information indicating a reason for routing the emergency call to the alternate answering point instead of the primary answering point, and transmits the alternate routing information to the alternate answering point for processing.