Calling party validation
US11228680B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Feb 27, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/72
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In order to confirm that a telephone call received by a network termination on a first connection is from a trusted party, the called party connects over a second, independent, connection 7 to a server associated with the trusted party and shares a code with the server. That code is then transmitted over the first connection and, if the connection is genuine, it is intercepted by the server which generates a message over the second connection confirming that the code has been matched. This gives the called party assurance that the call is from a party associated with the trusted server. If a rogue caller attempts to call the termination, the called party's transmission of the shared code will be routed over the caller's connection, which is not associated with the trusted server, so no match will be identified by the server and no confirmation is returned over the second connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.