Repeater supervision
US5271035A · kind A · utility
7Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1992 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Aug 10, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/242
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An arrangement for signalling to supervisory equipment in a repeater in a digital transmission system. A digital data test sequence comprising a plurality of multi-bit words each accompanied by a parity check bit is fed to the transmission systems. Digital supervisory signals modulate the test sequence and periodic parity violations are imposed on the test sequence. A first counter counts the periodic violations imposed on the test sequence and a second like counter counts errors in the test signals returned from the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.