Patch Field Documentation and Revision Systems

• US 20070243725A1
• Filed: 06/21/2007
• Published: 10/18/2007
• Est. Priority Date: 08/26/2005
• Status: Active Grant

• Current Assignee: Panduit Corporation
• Original Assignee: Panduit Corporation
• Inventors: Nordin, Ronald, Caveney, Jack
• Granted Patent: US 7,563,102 B2
• Time in Patent Office: Days
• US Class Current: 439/49
• CPC Class Codes: H04Q 1/136 having patch field management or physical layer management arrangements
• CPC Class Codes: Y10S 439/955 including electronic identifier or coding means

Abstract

A communication network device and corresponding patch field system are disclosed. The device includes a port module, ports, and an appliqué attached to a face of the port module. The appliqué includes a printed circuit board (PCB) with conductive pads. A patch cord connects the device with an intelligent patch panel. The patch cord contains at least one system wire. The patch panel is adapted to measure a resistance associated with each port via the system wire. An open circuit indicates that no patch cord is attached to the port, a resistance within a first range indicates that the patch cord is attached only to the port of the intelligent patch panel, and a resistance within a second range less than the first range indicates that the patch cord connects the intelligent patch panel and the device.

Claims

1. A network device comprising a printed circuit board (PCB) and a plurality of ports, each of the ports adapted to receive a patch cord, the PCB adapted to provide a plurality of port signature resistances and a panel signature resistance, the port signature resistance associated with a particular port unique to the particular port, the panel signature resistance associated with the particular port dependent on a group of ports to which the particular port belongs, the group of ports containing at least two of the plurality of ports.

2. The network device of claim 1, further comprising:

a plurality of LED modules, each LED module adjacent to a different port and containing an LED; and

a reflector disposed between adjacent LED modules such that the reflector optically isolates the adjacent LED modules from one another.

3. The network device of claim 2, wherein the adjacent LED modules are aligned vertically, a center of the reflector is aligned vertically with centers of the adjacent LED modules, and the reflector extends horizontally in both directions farther from the center of the reflector than the LEDs of the adjacent LED modules extend from the center of the adjacent LED modules.

4. The network device of claim 2, wherein power for the LEDs is carried by a patch cord such that the LED associated with a particular port is able to be illuminated only if a patch cord is connected to the particular port.

5. The network device of claim 1, wherein:

each port signature resistance is provided by an individual port signature resistor, and the PCB is adapted to provide a plurality of panel signature resistances, each panel signature resistance provided by an individual panel signature resistor.

6. The network device of claim 1, wherein:

each port signature resistance is provided by an individual port signature resistor,

the panel signature resistance is provided by a panel signature resistor, and

the same panel signature resistor is associated with each of the ports.

7. The network device of claim 1, wherein the PCB comprises:

a plurality of port signature resistors, each port signature resistance provided by one of the port signature resistors,

a panel signature resistor that provides the panel signature resistance, and

a plurality of diodes connected to the port and panel signature resistors such that, of the port and panel signature resistors, only the port signature resistor is measurable when a first voltage is applied and only the panel signature resistor is measurable when a second voltage of opposite polarity to the first voltage is applied.

8. The network device of claim 7, wherein:

the PCB comprises a port identification circuit that contains different color LEDs, and

the port identification circuit is configured such that a series combination of the port signature resistor and an LED of a first color is connected in parallel with a series combination of the panel signature resistor and an LED of a second color.

9. The network device of claim 1, wherein the PCB further comprises a plurality of pairs of externally accessible conductive pads, each pair of conductive pads adjacent to and associated with a particular port, each pair of conductive pads connected with the port and panel signature resistances of the associated port such that the port and panel signature resistances of the associated port are measurable by connection to the pair of conductive pads.

10. The network device of claim 9, wherein the pair of conductive pads associated with a particular port is vertically adjacent to the particular port such that the pair of conductive pads is asymmetrically positioned with respect to a vertically-extending centerline of the particular port, adjacent pairs of conductive pads associated with vertically adjacent ports overlapping horizontally.

11. A network device comprising:

a plurality of ports, each of the ports adapted to receive a patch cord;

a plurality of LED modules, each LED module adjacent to a different port and containing an LED; and

an optical isolator disposed between adjacent LED modules such that the optical isolator optically isolates the adjacent LED modules from one another.

12. The network device of claim 11, wherein the optical isolator comprises a plurality of individual reflectors.

13. The network device of claim 12, wherein:

the adjacent LED modules are aligned vertically,

each reflector isolates a pair of vertically adjacent LED modules,

a center of each reflector is aligned vertically with centers of a particular pair of vertically adjacent LED modules associated with the reflector, and

each reflector extends horizontally in both directions farther from the center of the reflector than the LEDs of the adjacent LED modules associated with the reflector extend from the center of the adjacent LED modules associated with the reflector.

14. The network device of claim 12, further comprising:

a frame from which the reflectors extend;

a printed circuit board (PCB) containing the LED modules, the PCB having apertures adjacent to the LED modules and through which the reflectors pass; and

a cover covering the LED modules and the reflectors, the cover comprising a clear material that permits the LEDs to be visible externally.

15. The network device of claim 14, further comprising an appliqué

attached to a face of the network device between sets of vertically adjacent ports, the appliqué

containing the frame, the PCB, and the cover.

16. The network device of claim 11, further comprising a printed circuit board (PCB) containing the LED modules, each LED module containing a plurality of different color LEDs, the PCB adapted to control the different color LEDs to display to which port a patch cord is to be inserted or removed and whether the patch cord has been inserted or removed correctly using different colors and LED display modes.

17. The network device of claim 11, wherein power for the LEDs is carried by a patch cord such that the LED associated with a particular port is able to be illuminated only if a patch cord is connected to the particular port.

18. The network device of claim 11, further comprising a printed circuit board (PCB) that contains a plurality of pairs of externally accessible conductive pads and the LED modules, each pair of conductive pads adjacent to and associated with a particular port.

19. The network device of claim 18, wherein the pair of conductive pads associated with a particular port is vertically adjacent to the particular port such that the pair of conductive pads is asymmetrically positioned with respect to a vertically-extending centerline of the particular port, adjacent pairs of conductive pads associated with vertically adjacent ports overlapping horizontally.

20. A method of managing a patch field system, the method comprising:

providing a network device having a plurality of network device ports and a printed circuit board (PCB) with a plurality of pairs of PCB conductive pads, each pair of PCB conductive pads associated with a different network device port;

providing a patch panel having a plurality of patch panel ports and a plurality of patch panel conductive pads, each pair of patch panel conductive pads associated with a different patch panel port; and

the patch panel measuring a resistance associated with one of the patch panel ports using the pair of patch panel conductive pads associated with the one of the patch panel ports, a measurement in a first resistance range indicating that no patch cord is attached to the one of the patch panel ports, a measurement in a second resistance range indicating that a patch cord is attached only to the one of the patch panel ports, a measurement in a third resistance range indicating that a patch cord is connected between the one of the patch panel ports and one of the network device ports.

21. The method of claim 20, further comprising determining to which network device port the one of the patch panel ports is connected using the resistance measured, each of the network device ports having a port signature resistance unique to the network device port and a patch panel signature resistance dependent on a group of network device ports to which the network device port belongs, the group of network device ports containing at least two of the plurality of network device ports.

22. The method of claim 21, further comprising:

permitting measurement of the port signature resistance of the one of the network device ports when a first voltage is applied to the pair of patch panel conductive pads associated with the one of the patch panel ports but not when a second voltage of opposite polarity than the first voltage is applied; and

permitting measurement of the patch panel signature resistance of the one of the network device ports when the second voltage is applied to the pair of patch panel conductive pads associated with the one of the patch panel ports but not when the first voltage is applied.