Signal branching method applied to a protection switching equipment provided in a drop-insert station of a transmission system
US5163041A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1990 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Oct 16, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/74
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A line terminal equipment provided in a drop-insert station of a transmission system for receiving a signal from a preceding station of the drop-insert station through a preceding protection line is electrically connected in a protection switching equipment provided in the drop-insert station, to a line terminal equipment provided in the drop-insert station for transmitting the signal to a succeeding station of the drop-insert station, by a connecting line provided in the protection switching equipment, in any one of cases where no disconnection trouble occurs on preceding and succeeding work lines, where disconnection troubles occur on one of the preceding work lines and a succeeding work line associated with the preceding work line and where a disconnection trouble occurs on one of the preceding work lines. The connecting line is disconnected in a case where a disconnection trouble occurs on one of the succeeding work line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.