PC server telecommunications power system
US6434236B1 · kind B1 · utility
6Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1998 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Nov 10, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M19/026
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system within a PC server cabinet for receiving an externally supplied loop feed voltage (−48 VDC) and generating a ringing voltage (75 VAC) from the loop feed voltage. For universal applicability, the ringing voltage generator is preferably located in a 5.25 inch standard disk-drive housing of the cabinet, allowing it to fit into any PC. All required telecommunications signaling and power is thereby provided in the PC while limiting accidental user exposure to hazardous ringing signal voltage levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.