Multifunctional communication terminal connected to two telephone lines and with partial remote supply
US4464542A · kind A · utility
3Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1982 |
| Grant date | Aug 7, 1984 |
| Priority date | — |
| Expiry date | Dec 13, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M11/066
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The terminal according to the invention is connected to two telephone lines and comprises a data display means with a data introduction keyboard cooperating with a telephone call signal generator, whereby the latter can transmit calls on either of the two telephone lines, either directly on one line in the case of a mains failure, or via the central processing unit of the display means, when the mains supply is present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.