Apparatus for line state analysis in a telecommunications system
US6549570B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1999 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Apr 15, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M11/062
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A line state analyzer (42, 116) is provided for determining if two asynchronous digital subscriber line modems (12, 34) have entered a training stage or if some error has occurred prior to entering the training stage, and to assist in determining which of the modems is at fault. The analyzer includes a frequency detection circuit (50) to detect the various signals exchanged by the modems prior to entering the training stage. The information detected by the detection circuit is presented on a visual display (51, 123). Operator perceptible indicia (51, 119) may be provided to assist the operator in identifying what the line state analyzer has determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.