Method and apparatus for providing integral cell payload integrity verification and detecting defective modules in telecommunication devices
US6771605B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2000 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Jan 3, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5652
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for identifying faulty modules within telecommunication devices, such as ATM switches, involves generating and attaching verification codes, such as CRC or checksum codes, to data packets, such as ATM cells, at an upstream location, determining the integrity of the verification codes at each of multiple downstream location within a telecommunication device; and signaling an error condition where a corrupted data packet has been detected. A verification code may be written to a filed of a data packet which is not used while the ATM cell is in transit through the telecommunication device, thereby identifying a faulty module device without adversely affecting throughput.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.