Asynchronous transfer mode (ATM) protection triggering method using “receive-AIS (alarm indication signal)” flag
US6411600B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 6, 1998 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Aug 6, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5627
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An asynchronous transfer mode (ATM) protection triggering method using “received-AIS” flag determines whether the failure generation position is generated within a protected domain or not, by determining whether the “received-AIS” flag is “0” in case that a node detecting a failure link transmits an end-to-end AIS cell to a downstream side node, and a source point passing the end-to-end AIS cell sets the “received-AIS” flag to “1” and then receives “AIS cell receiving” signal from a sink point of the protected domain, thereby obviating a CRC-10 calculation problem and a backward compatibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.