Apparatus and accompanying methods for preventing toll fraud through use of centralized caller voice verification
US5502759A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 1993 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | May 13, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2215/0148
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus and accompanying methods for preventing telephone toll fraud that relies on the use of centralized voice verification to authenticate a party claiming a particular identity and requesting service, i.e. access to a telephone network. A voice verification intelligent peripheral (VVIP) (300) is interposed between, e.g., a tandem switch (40) and a voice service node (VSN) (250) both used to provide alternate automated billing service (AABS). The VVIP intercepts all call processing messages that occur between these two components and, at a pre-defined point during the processing of an AABS call, holds a call processing message, specifically a successful line information database (LIDB) query response message, until a voice verification of a caller is complete. While the message is held, the VVIP prompts the caller, who is claiming to be a subscriber, to speak a pre-defined password, obtains a voice template of the resulting speech and attempts to match this template against a template previously stored, within the VVIP, for the subscriber, during a prior enrollment process and for the same password. If the templates match and hence the identity claimed by the caller is conf…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.