Method and system for communicating the status of a digital transmission line element during loopback
US6453432B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Oct 4, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/242
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for reporting the status of a digital transmission line element, such as a regenerative repeater or a network interface unit, to a remote location. The line element is interconnected to a digital transmission line and receives a data stream via the transmission line from the remote location. The data stream follows predetermined coding rules. In a loopback mode, the line element loops back the data stream via the transmission line to the sending end. The line element includes a detector and an error generator. The detector senses a status query signal in the data stream and responsively enables the error generator to then selectively introduce error message into the data stream being looped back along the transmission line. The error message may then be detected at a remote location to a provide information regarding the line element, such as its location or operating mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.