Caller ID Verification for Spoofed Call Detection

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Solution Overview

Problem

Existing systems fail to effectively detect and block spoofed calls, particularly those originating from illegitimate sources, which can be frustrating and potentially fraudulent, as they manipulate caller ID information to appear legitimate.

Innovation Solution

A spoofing detector system that utilizes network queries and geographic location verification to identify spoofed calls by checking the status of the caller's device and network registration, allowing for preventative actions such as call blocking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If automated dialing systems are used to increase calling productivity, then the number of calls that can be made increases, but the prevalence of spoofed calls and fraudulent transactions increases

Engineering Contradiction:

Improvecalling productivityVSAvoidspoofed calls and fraud

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary verification of caller ID authenticity before allowing calls to connect. Network elements intercept and verify caller ID information in advance by checking registration status and device state, preventing spoofed calls from reaching their destination while still allowing legitimate automated calling systems to operate.

Inventive Principle:

Principle #10Preliminary action

2Loss of information

If caller ID spoofing is used to mask automated calls, then the legitimacy of calls appears improved to called parties, but the ability to detect fraudulent calls deteriorates

Engineering Contradiction:

Improvecaller legitimacy informationVSAvoidcall authenticity detection

Core Design Contradiction:

Loss of informationVSMeasurement precision

Solution Approach 1:

The system implements feedback mechanisms where network elements continuously verify caller ID information against registration databases. The verification process provides feedback on whether the caller ID matches the actual calling device, enabling real-time detection of spoofing attempts while maintaining accurate caller identification for legitimate calls.

Inventive Principle:

Principle #23Feedback

3Object-affected harmful factors

If do not call laws are enforced to reduce unwanted calls, then called party privacy is improved, but the effectiveness is reduced when calls originate from jurisdictions where laws are inapplicable

Engineering Contradiction:

Improveunwanted calls to called partiesVSAvoidcross-jurisdictional call blocking

Core Design Contradiction:

Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The system introduces network elements as intermediaries that operate independently of jurisdictional boundaries. These intermediaries verify caller ID authenticity at the network level using technical criteria rather than legal jurisdiction, enabling consistent blocking of spoofed calls regardless of where the calling device is located.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12592989B2Detecting a spoofed call

Publication Date: 2026.03.31 AT&T INTELLECTUAL PROPERTY I L P

AI summary

A system can be operable to receive a call from a communication device and identify whether the call is a spoofed based on, for example, whether a caller party user equipment associated with a caller identification number (caller ID number) is in an “idle” status, whether there are inconsistencies in the geographic location associated with a calling party's network and the geographic location determined to be associated with the caller ID number presented, and whether the phone number presented as the caller ID number is registered with a calling party's network.