Method and apparatus for errorless path protection and rearrangement
US6795393B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2000 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Nov 30, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13167
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus and a method for cross connect matrices includes originating, center and terminating stages in both a main portion and a back-up portion that allows center stages to be switched without causing a framing error. The signal from the main portion is transmitted through both the back-up and main portions of the cross connect matrices such that a terminating line card receives a frame aligned signal from the main and back portions. The terminating line card then switches its output to be the signal produced by the back-up portion with no framing error. In the main portion, the center stage may be switched. After the center stage is switched, the terminating line card can switch again to output the signal from the main portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.