Remote module for a communications network
US7434139B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2005 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | May 17, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/1671
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Determination of the location of an error condition or a failure includes receiving at a network interface a first framed digital signal from customer premises equipment, and determining whether the first framed digital signal indicates a failure. Overhead bits are modified in the first framed digital signal to generate a second framed digital signal, such that the modification is equivalent to insertion of errors into the first framed digital signal at a bit error ratio (BER) of not greater than a predetermined ratio, if the first framed digital signal indicates a failure. The second framed digital signal is then sent from the network interface in place of the first framed digital signal to indicate that the failure reported by the first framed digital signal is located in the customer premises equipment. Otherwise, if no failure is indicated, the first framed digital signal is transmitted without any modifications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.