System and method for reconfiguring a telecommunications network to its normal state after repair of fault
US6222821A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1995 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Jun 22, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q3/0079
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
To revert the topology of a network to its original or normal state after an alternate route has been found for bypassing traffic away from a malfunctioned link that has since been repaired, an Operation Support System (OSS) sends to each of the custodial sender/chooser nodes and the tandem nodes that form the alternate route respective commands to revert the operation(s) that each node had performed during distributed restoration. The OSS is able to identify the custodial nodes by the fact that those nodes perform more operations than the tandem nodes. The operations that were performed during the distributed restoration process were recorded and the thus restored topology of the network is mapped and stored. Upon receipt from the different nodes that the malfunctioned link has been repaired, the OSS sends to each of the nodes a specific command to perform the inverse of the operation(s) that that node had performed during the restoration. The custodial nodes are ordered to perform their inverse operations first so that the malfunctioned link that has since been repaired once again connects the custodial nodes. A path verification process is next performed to ensure the integrity …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.