Method and apparatus for rapidly restoring a communication network
US5146452A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1990 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Oct 26, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q3/0079
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides an approach to reconnect a communications network such as a DS3 telephone-type network when a span of DS3 channels is rendered inoperative, such as by cutting, within the 1.5 second time frame necessary to prevent disablement of local offices. This is accomplished by preplanning a restoration connection for each possible operating link failure in each span using spare capacity. A dedicated (DS3) communication loop is used to inform all nodes in the network substantially simultaneously to implement their portion of a plan associated with the failed span. After the restoration occurs for a given failed span, the concept can be extended to start planning for further failures or can be designed to restore further failures on a real time basis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.