Emergency Callback Verification for Missed PSAP Return Calls
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Solution Overview
Problem
Existing systems face challenges in ensuring that emergency callers are successfully reached during callback attempts by public safety answering points (PSAPs) due to issues such as unrecognized caller IDs, voicemail interception, and the use of suspended devices.
Innovation Solution
A system utilizing enhanced caller identification through the Session Initiation Protocol (SIP) priority header and SHAKEN framework to verify the identity of PSAPs, providing additional information like the caller's name and reason for calling, and temporarily suppressing other calls to ensure the callback is not missed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If enhanced caller identification and verification mechanisms are implemented, then the reliability of emergency callbacks is improved, but the device complexity increases
Solution Approach 1:
The patent introduces intermediary components including a home network gateway that acts as a mediator between the PSAP callback system and the user device, and a module within the device that facilitates verification. These intermediaries handle the complex verification processes, isolating the complexity from the core emergency callback function while maintaining reliability.
Solution Approach 2:
The system is divided into distinct functional segments: the PSAP callback initiation system, the home network gateway for verification, and the local module for displaying verification information. This segmentation allows each component to specialize in specific verification tasks, improving overall reliability while managing complexity through modular architecture.
2Ease of operation
If additional verification information is transmitted during callback, then the ease of operation is improved, but the loss of information increases
Solution Approach 1:
The patent extracts only the essential verification information needed for emergency callback recognition and transmits it separately from the main call data. This includes displaying verification indicators such as PSAP identification and callback status on the user interface, while keeping the core telephony data channels free for primary communication purposes.
Solution Approach 2:
Verification information is presented in a different dimension through the user interface display rather than competing for the same data channel as voice communication. The system adds a visual information layer that provides verification details without interfering with the audio data stream, effectively utilizing multiple information dimensions simultaneously.
Data Source
AI summary
The system comprises a gateway node configured to receive a request from a public safety answering point. The request is configured to initiate an emergency callback session with a user device in response to an error occurring in an emergency session between the user device and the public safety answering point. The system also includes a home network node configured to provide, upon an identity of the public safety answering point being verified, verification information about the request and the public safety answering point to the user device. The system includes a module deployed on a user device, the module comprising at least one processor and at least one non-transitory memory storing instructions. The instructions, when executed by the at least one processor, cause the module to display the verification information about the request on a user interface of the user device.