Hybrid telephony device
US7076278B2 · kind B2 · utility
0Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2003 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Jun 3, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M19/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A device configured to draw current from one of a PSTN source and a battery source depending on a mode of operation of the device is disclosed. In a preferred embodiment, the device includes a circuit that is configured to draw current from the PSTN source during a first condition and from the battery source during a second condition. Preferably, the circuit is defaulted to draw current from the battery source. The first condition can be associated with an off-hook condition. The second condition can be associated with an on-hook condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.