Permanent connection management method in exchange network
US5896496A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1997 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | Jun 10, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A polling is executed periodically among each of nodes connected by a transmission path mutually. The node recognizes that a defect occurred in a connection state of the transmission path, when it detects a lack of a periodic polling from an adjacent node three times. Then, the node registers that all of permanent connections which are set up so as to pass through the transmission path are invalid in its Permanent Virtual Circuit (PVC) management table, and notifies the invalidity of the permanent connection to the node of the next step in the permanent connection. The node of the next step which received the notification registers that the notified permanent connection is invalid in its PVC table and notifies the invalidity of the notified permanent connection to the node of the further next step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.