Redundant operation of ring voltage generators utilizing voltage bus segmentation for fault isolation
US6813353B1 · kind B1 · utility
1Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2000 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Apr 12, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A redundant ringing signal generator subdivides a ringing signal bus into multiple ringing bus segments. A plurality of redundant ringing voltage generators sourcing internally and/or externally ringing voltages are individually and selectively connectable to the multiple ringing bus segments. In the event of a prescribed anomaly in the ringing signal sourced by a ringing generator, the faulty ringing signal is automatically disconnected from its associated ringing bus segment, and that ringing bus segment is connected to a redundant ringing signal source, provided by either the same or another ringing generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.