Bidirectional inline power port
First Claim
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1. A data telecommunications network, comprising:
- a first device having a first port configured as power sourcing equipment (PSE);
a second device having a second port coupled to said first port, and a third port, the second port configured as a powered device (PD) and the third port configured as PSE, the second and the third port coupled within the second device to communicate data;
a third device having a fourth port coupled to said third port, and a fifth port, the fourth port configured at a first time as a PD and the fifth port configured at the first time with inline power turned off, the fourth port and the fifth port coupled within the third device to communicate data;
a fourth device having a sixth port coupled to said fifth port, and a seventh port, the sixth port configured at the first time with inline power turned off, the sixth port and the seventh port coupled within the fourth device to communicate data; and
circuitry for detecting a loss of power at a second time delivered from said third port to said fourth port, said fourth port adapted to turn off inline power responsive to said circuitry, said fifth port adapted to be configured as a PD responsive to said circuitry, and said sixth port adapted to turn on inline power and configure itself as PSE in response to said fifth port becoming configured as a PD.
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Abstract
A method and apparatus for bidirectional provision of inline power over data telecommunications cabling permits power to be received at a local powered device (PD) from remote power sourcing equipment (PSE) via at least one conductor at a first time and power to be provided by the local device to the remote device or another device at a second different time.
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Citations
12 Claims
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1. A data telecommunications network, comprising:
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a first device having a first port configured as power sourcing equipment (PSE); a second device having a second port coupled to said first port, and a third port, the second port configured as a powered device (PD) and the third port configured as PSE, the second and the third port coupled within the second device to communicate data; a third device having a fourth port coupled to said third port, and a fifth port, the fourth port configured at a first time as a PD and the fifth port configured at the first time with inline power turned off, the fourth port and the fifth port coupled within the third device to communicate data; a fourth device having a sixth port coupled to said fifth port, and a seventh port, the sixth port configured at the first time with inline power turned off, the sixth port and the seventh port coupled within the fourth device to communicate data; and circuitry for detecting a loss of power at a second time delivered from said third port to said fourth port, said fourth port adapted to turn off inline power responsive to said circuitry, said fifth port adapted to be configured as a PD responsive to said circuitry, and said sixth port adapted to turn on inline power and configure itself as PSE in response to said fifth port becoming configured as a PD. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of operation for a data telecommunications network having a first device having a first port configured as power sourcing equipment (PSE), a second device having a second port coupled to said first port, and a third port, the second port configured as a powered device (PD) and the third port configured as PSE, the second and the third port coupled within the second device to communicate data, a third device having a fourth port coupled to said third port, and a fifth port, the fourth port configured at a first time as a PD and the fifth port configured at the first time with inline power turned off, the fourth port and the fifth port coupled within the third device to communicate data, and a fourth device having a sixth port coupled to said fifth port, and a seventh port, the sixth port configured at the first time with inline power turned off, and the sixth port and the seventh port coupled within the fourth device to communicate data, said method comprising:
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detecting a loss of power at a second time delivered from the third port to the fourth port; turning off inline power at the fourth port in response to said detecting; configuring the fifth port as a PD in response to said detecting; turning on inline power at the sixth port and configuring the sixth port as PSE in response to the fifth port becoming configured as a PD. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification