Method and apparatus for fiber autonegotiation
US7242693B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2003 |
| Grant date | Jul 10, 2007 |
| Priority date | — |
| Expiry date | Jan 12, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/40136
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A first network device includes a first physical layer device with a first autonegotiation circuit. A bypass timer determines a predetermined period. A second network device includes a second physical layer device. The first network device enables autonegotiation bypass and establishes a link with the second network device after the predetermined period during which a link between the first and second network devices is not up, a receiver of the first physical layer device is in sync, and an ability detect state of the first autonegotiation circuit is true. The first autonegotiation circuit resets the predetermined period of the bypass timer when configuration code groups are received from the second network device. When the first network device receives idle code groups followed by data code groups, the first autonegotiation circuit does not return to an autonegotiation enable state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.