Quasi ground fault interruption signal-based activation of emergency pots by-pass paths for line-powered digital subscriber loop
US6757382B1 · kind B1 · utility
48Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2000 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Jan 7, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13209
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A ‘lifeline’ POTS back-up mechanism is operative to provide emergency plain old telephone service connectivity over a span-powered two-wire metallic digital subscriber loop pair, in response to a customer's phone going off-hook, during a lack of normal operating condition of the digital circuit path. A ground fault interruption signal is generated in a remote terminal and used to activate respective POTS by-pass paths in the remote terminal and a central office terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.