Bi-directional line switched ring network system
US6614754B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1999 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Apr 27, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A bi-directional line switched ring network system including a plurality of optical fiber communications lines and a plurality of nodes connected by the plurality of optical fiber communications lines forming a closed circuit. Each of the nodes performs an addition and a drop of a path between an external communications apparatus and the optical fiber communications lines or permits the path on the optical fiber communications lines to pass through, or performs a change of a direction of the path. A control unit is located in each of the nodes to control the addition, the drop, the pass-through and the direction change of the path. When the path passes through each of the nodes, the control unit sets a time slot number of the path in being inputted into the node and a time slot number of the path in being outputted from the node independently of each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.