Call Control Device Routing Emergency Callbacks to Original User Device
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Solution Overview
Problem
Emergency personnel face challenges in reconnecting with users after an emergency call, as calls back to virtual phone numbers often ring multiple devices, allowing others to answer and intercept the call instead of the original device used for the emergency call.
Innovation Solution
Implementing a system that identifies the specific device used for the emergency call and directs the call back only to that device, ensuring that emergency personnel can reconnect with the user without interference from other associated devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a virtual phone number is used for emergency calls, then multiple devices can be associated with the same number for flexibility, but the call back may be answered by someone other than the original user
Solution Approach 1:
The system segments the call delivery process by distinguishing between the virtual phone number (for routing) and the specific device identifier (for precise delivery). The call control device separates the association of multiple devices with a virtual number from the actual call routing decision, using stored device identifiers to direct calls to the specific original device rather than distributing to all associated devices.
Solution Approach 2:
The call control device acts as an intermediary between the emergency call and the user's devices. It maintains an association between virtual phone numbers and specific device identifiers, intercepting call back requests and redirecting them to the correct device based on stored associations, thereby preventing interception by unauthorized devices.
2Measurement precision
If call information identifying the device is stored and used, then the original device can be identified for call back, but the system complexity increases
Solution Approach 1:
The system performs preliminary action by storing the device identifier associated with the virtual phone number before the emergency call occurs. The call control device pre-establishes the mapping between virtual numbers and specific devices, so that when an emergency call is made, the identification and routing can proceed efficiently without complex real-time analysis.
Data Source
AI summary
A device may receive a first call associated with a virtual phone number associated with a first user device and a second user device. The device may determine, and may store information indicating, that the first call was made using the first user device. The device may receive a second call directed to the virtual phone number and may determine whether the second call comprises a call back associated with the first call. The device may selectively send the second call to the first user device or to the first and second user devices based on determining whether the second call comprises the call back. The second call may be sent to the first and second user devices when the second call does not comprise the call back and may be sent to the first user device when the second call comprises the call back.