Optical interface in SONET system
US5682257A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1996 |
| Grant date | Oct 28, 1997 |
| Priority date | — |
| Expiry date | Sep 16, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical interface in a SONET system, wherein the optical interface includes a first multiplex/demultiplex apparatus for multiplexing/demultiplexing higher level signals of the main line side and lower level signals of the subscriber side and performing electrical/optical conversion of the lower level electrical signals and optical signals. An optical transmission line is provided for transmitting the optical signals. A second multiplex/demultiplex apparatus converts between the optical signals and a plurality of subscriber side line digital electrical signals. The overhead signals contained in the lower level signals and reaching the first multiplex/demultiplex apparatus are also contained in the optical signals and are transferred further from the first multiplex/demultiplex apparatus to the second multiplex/demultiplex apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.