Automated call filter
US4852149A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1988 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Jun 29, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q3/625
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A Call Filter System (CFS): (1) logically interfaces between a public telephone network and business customer premises equipment; (2) automatically processes incoming and outgoing calls which are amenable to such intervention; and (3) enlists the aid of human intervention on calls requiring such intervention. The CFS includes a network line interface (NLI) for receiving calls from and placing calls to the public telephone network; a premises line interface (PLI) for receiving calls from and placing calls to the business customer premises equipment; a voice processing means (VPM) which is switchably interconnected to the NLI and/or the PLI for translating audio signals transmitted thereto from the NLI or PLI and for transmitting audio signals to the NLI or PLI; a connection and switching means (CSM) for connecting and switching the NLI to either the PLI or VPM and for connecting and switching the PLI to either the NLI or VPM; and a controller for directing the activities of the NLI, PLI, VPM and CSM to automatically process incoming calls to and outgoing calls from the CFS.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.