Power and data redundancy in a single wiring closet
US7849351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2004 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Mar 30, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/0604
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Redundancy of data and/or Inline Power in a wired data telecommunications network from a first network device and a second network device configured as power sourcing equipment (PSE) devices and coupled together and to a third network device (such as a PD) via a Y device is provided by providing redundant signaling to/from each of the pair of network devices, and coupling a port of each of the network devices to the Y device and from there to a third port where a third network device such as a PD may be coupled. Because the Y device is essentially passive, communications paths between the PSE devices and the PD are provided for negotiating master/slave status and other status and related information among the respective network devices. Dynamic impedance matching is provided to handle situations where not all devices are plugged in and as a communications technique among the devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.