Call authentication system and method for blocking unwanted calls
US10652390B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Apr 16, 2018 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Apr 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2250/60
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for blocking unwanted calls has been provided. The includes intercepting a call being routed from a calling device to a receiving device. The intercepting occurs prior to the call being presented to the receiving device for an answer. The method further determines further routing of the intercepted call by comparing parameters of the intercepted call to one or more lists. If it is determined that the call should be authenticated, the method sends an authentication challenge to the calling device. If a response is received to the authentication challenge, the method determines whether the response is correct. If the response is correct, the method routes the call to the receiving device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.