Remote actuated command circuit for seizing telephone lines
US4949372A · kind A · utility
5Cited by
9References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 9, 1988 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Nov 9, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/652
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A remote actuated command circuit establishes telephone communications between a communications device at a remote location and a local communications terminal device without interference from a telephone answering machine connected to the incoming telephone line. The remote actuated command circuit establishes these communications when it receives from the remote communications device a predetermined signal not normally available to a telephone user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.