# Patent

## Title
VOIP telephone location system

## Abstract

A documentation system for a network is provided. The system has a data port and a destination device, each of which includes an electronic module with an identification code. A source device sends query signals along a network path addressed to the data port and destination device. Each of the data port and destination device electronic module responds to the query addressed to the data port and destination device by transmitting its identification code to the source device. A processor and switch in communication with the source device direct the source device to send the query signals and to interpret the responses. The data port and destination device electronic modules are powered by a local power source and patch cord. A patch cord may be adapted to provide power from the local power source both to the destination device and to the data port.

## Background
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation of U.S. patent application Ser. No. 10/366,093, filed Feb. 13, 2003, which claims priority to U.S. Patent Application No. 60/357,017, filed Feb. 14, 2002, which is incorporated herein by reference in its entirety.


BACKGROUND OF THE INVENTION
As communication network utilization and technology continues to escalate, the typical local area network (LAN) is simultaneously growing larger and denser, and it is increasingly desirable and advantageous to continuously document the physical paths of network interconnections and the physical locations of network components, including network connectors or ports in such paths and destination devices, e.g., personal computers or telephones, including Voice Over Internet Protocol (VOIP) telephones.
Such a documentation system provides many advantages, including facilitating the planning and revision processes, the determination of the location of the physical area of a discontinuity in the network path, and the determination of the physical locations of destination devices such as VOIP telephones. It is important that the documentation system be supported with reliable power to destination devices and electronic identification modules which identify the destination devices and/or ports to which they are attached.
SUMMARY OF THE INVENTION
There is provided a documentation system for a network having a source device which is connected to at least one destination device through at least one intermediate network path element. The source device has the capability to transmit a query signal directed to any destination device to which it is connected and each destination device has the capability to send a response signal containing its identification code back to the source device. In addition, the source device has the capability to transmit a query signal directed to any intermediate network path element which has a physical location in a designated zone, and an electronic module in the intermediate network path element has the capability to return a response signal containing its identification code back to the source device. A power supply is provided for providing power to electronic identification modules within destination devices and within ports to which the destination devices are attached. The source may be adapted to re-send a query signal if one or more response signals are not received. According to one embodiment of the invention, powered electronic identification modules are provided both within destination devices and within ports to which the destination devices are connected, though it is contemplated that powered electronic modules may be provided only within destination devices or only within ports to which the destination devices are connected. The electronic identification modules may be Media Access Controller modules (“MAC modules”), with identification codes being MAC addresses.
The network documentation system utilizes software to direct the source device to sequentially send query signals directed to destination devices to which it is connected and to intermediate network path elements in each designated zone to which it is connected. The response signals are interpreted by the software to document the network configuration.



BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
FIG. 1 is a schematic view of a documentation system in accordance with a first embodiment of the invention;
FIG. 2 is a schematic view of a documentation system in accordance with a second embodiment of the invention;
FIG. 3 is a schematic view of a power supply system in accordance with one embodiment of the present invention;
FIG. 4 is a schematic view of a power supply system in accordance with another embodiment of the present invention;
FIG. 5 is a schematic view of a power supply system in accordance with another embodiment of the present invention;
FIG. 6 is a schematic view of a power supply system in accordance with another embodiment of the present invention; and
FIG. 7 is a schematic view of a power supply system in accordance with another embodiment of the present invention.



DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS
The invention is directed to apparatus and methods which automatically provide documentation of a network system, hereinafter called “the system.” This description incorporates by reference in their entireties previously filed U.S. patent application Ser. No. 10/060,608, filed Jan. 30, 2002, entitled “Network Documentation System With Electronic Modules,” along with prior filed application Ser. Nos. 60/270,811, filed Feb. 23, 2001, and 60/297,289, filed Jun. 11, 2001, both entitled “Apparatus And Method For Efficient Network Reconfiguration” and incorporated by reference therein in their entireties. This description further incorporates by reference in its entirety previously filed U.S. provisional patent application Ser. No. 60/352,826, filed Jan. 30, 2002, entitled “Network Documentation System With Electronic Modules.”
To improve the accuracy, efficiency and capability of documenting a network system, electronic modules are placed into electronic communication networks with corresponding ports or nodes of the network such that connecting apparatus, connecting the respective ports or nodes to a source device, also provide a mechanism by which query and response signals may be routed between the source device and the connected ports or nodes in the system in the same manner that data signals may be transmitted between them. The signals may be transmitted over the same or a different medium from the data signals (e.g., common or separate wire or fiber). The electronic modules have associated identification elements that may have a single component or multiple components, and the modules are capable of receiving and recognizing query signals directed to them and responding by transmitting their identification code back to the source device. Thus, the system may utilize signals directed toward and received from all of the respective data ports or nodes in the system and thereby formulate a “map” of the entire system as it is physically configured.
In State of the Art documentation systems, such as the HP Openview System, and/or Element Management Systems, such as Cisco Works, a source device, i.e. a switch, sends a query signal through one designated network path that causes any destination device, i.e. a personal computer, that receives the query to transmit a response signal containing its identification code to the source device.
The inventive documentation and fault detection system contemplates the preferable use of electronic modules in every final destination device within a network, as well as in every network port which connects the source device to the final destination devices. Documentation systems and methods according to the present invention may be employed in Ethernet networks, including switched Ethernet networks. Each module can receive a query signal from a source, e.g., a switch, and ascertain whether the signal is directed to it by the use of identification codes. In a preferred embodiment of the invention, each electronic module which is in a designated physical location zone within the system has a unique zone address code. In some preferable embodiments of the invention, the ports and their corresponding modules may be stratified into “zones” based on their relative proximity, in an electrical or communications sense, to the source device and/or the final destination device. In these embodiments, since each signal ultimately travels only along one path given a particular network configuration, every port/module within a particular zone has the same zone addressing information, however each module retains a unique identification code which is transmitted to the source device in response to a query directed to it.
For example, a typical network may include a pair of patch panel ports for cross-connecting between a source and one or more destinations. In such an arrangement, the group of patch panel ports (and the electronic modules contained therein) closer to the source from a communications standpoint (i.e., the signal path direction) would be classified as zone 1. The next group of ports/modules along the signal path (i.e., the patch panel ports closer to the destination devices) would be classified as zone 2 in this example. The destination devices would be classified as zone 3.
The source sequentially sends a signal along respective output paths directed to any module along the path having a specified zone address. The one module in such zone along each respective path then, in turn, transmits back to the source when it receives the signal intended for its zone. The return signal includes the identification code of the module returning the signal. Using this procedure and information previously known to the documented system (e.g., the physical location of each port as identified by the unique identification codes thereof), the system can map (i.e. document) which ports and destination devices are connected along any particular signal path.
Each electronic module in the system would require a power supply which, in various embodiments of the invention, could be provided by a pair of conductors which could also be signal pairs or a battery. In a network system employing twisted wire pairs for carrying signals, the system could use one or more of the signal pairs to receive and transmit signals to and from particular electronic modules, including those associated with particular destination devices, sources, and network ports there between from a communications standpoint. A fiber optic or other LAN system could incorporate two conductors in each cable to be adapted for the same purpose.
As seen in FIG. 1, in a preferred embodiment of the invention, a computer or processor 10 is connected to a switch 12. At the direction of the processor, the switch may periodically or on-demand poll one or more of the data ports in the system to ascertain information about the ports. Alternatively or additionally, this polling may be accomplished using a software module provided on a computer or processor. Such polling may occur on a zone-by-zone basis, with the source device sequentially sending a signal, such as a query signal, along respective output lines directed to any electronic module along the path having the specified zone address. The identified module may then return its identification code back to the source. In this manner, the entire system may effectively be mapped (i.e., documented). The switch may preferably be in communication with a source device 14 and one or more destination devices 16.
A first zone 18 of data ports 20 may preferably be congregated on a single patch panel or network rack, and each of the data ports 20 is electrically connected directly with the source device 14. Each of the data ports 20, identified as “DP” in the figures, has an electronic module 22, identified as “EM” in the figures, in electrical communication therewith. Preferably, the first zone 18 of data ports includes a test port 23 disposed proximately thereto for permitting connection of a test plug. A second zone 24 of data ports 26 may also be congregated on another patch panel or network rack, and each of the data ports 26 is electrically connected directly with one of the destination devices 16. Each of the data ports 26 has an electronic module 28 in electrical communication therewith. Preferably, the second zone 24 of data ports includes a test port 29 disposed proximately thereto for permitting connection of a test plug. Additionally, the source device 14 preferably includes an electronic module 30 in electrical communication therewith and the destination devices 16 each include an electronic module 32 in electrical communication therewith. In FIG. 1, connective lines represent possible electrical connections that may be achieved by the use of patch cords and cables, and an exemplary system having six destination devices connected to a source device is shown.
FIG. 2 illustrates an interconnect configuration wherein the first zone 18 is a patch panel and the second zone 24 are the outlet ports (e.g., wall outlet jacks) to which the destination devices are connected. According to one embodiment of the present invention, the destination devices may be provided with state of the art electronic modules with common address codes and unique identification codes.
The outlet ports are identified as “DO” in FIG. 2. The destination outlets, while not qualitatively different than the data ports 7-12 of FIG. 1, are disposed proximately to the destination devices 16 to which they are connected. This provides the benefit of knowing approximately where a particular destination device is physically located based on its proximity to a destination outlet which is fixed in the physical world. Thus, by focusing on the identification code of the electronic module of the particular destination outlet, rather than that of the destination device itself, the approximate location of the destination device may be ascertained by the system.
Among the many benefits of the invention is the ability to completely map out a particular network configuration. In status quo systems, when a source and destination are no longer in communication, it cannot generally be easily determined which link in the pathway that connects them is the problematic link. In the present invention, each intersection, i.e., LAN port, has associated with it an electronic module having a zone address code, and because response signals from a particular electronic module include the identification code of the module, pathways from a source to a destination can be more clearly identified on a link-by-link or zone-by-zone basis. Physical locations of ports and destination devices and revision instructions can be more efficiently determined for a particular reconfiguration.
In various embodiments of this invention, this same query signal also causes one or a plurality of ports which contain electronic modules along said network path to add its response containing its identification code as a suffix or a series of suffixes to the response from the destination device or the various responses could be received in any order.
In one embodiment, only the port to which the destination device is connected to is equipped with an electronic module. This electronic module responds to a query from the source device after a pre-set time delay which is long enough for the response from the destination device to have occurred. The source device therefore receives the response from the destination device followed by the response from said port.
In a similar embodiment, additional electronic modules are located in ports in specified zones in the network path between said port and the source device and each zone electronic module has a designated time delay to correspond to its designated zone. In this manner, the entire path between the switch and ultimate device can be documented.
In another embodiment, only the port to which the destination device is connected is equipped with an electronic module. Said electronic module receives the query followed by the response from the destination device or it receives only the response from the destination device and it sends its response containing its identification code.
In a similar embodiment, additional electronic modules are located in ports in specified zones in the network path. These electronic modules receive the query followed by the response from the destination device or they receive only the response from the destination device followed by the successive responses from each of said ports which are closer to the destination device along the network path than it is and it then sends its response containing its identification code.
In another embodiment, only the port to which the destination device is connected is equipped with an electronic module which responds immediately with its identification code when a query from the source device is received. Subsequently, the destination device responds to the source query with its identification code.
In another embodiment, only the port to which the destination device is connected is equipped with an electronic module which responds with its identification code after a query from the source device is received. The destination device responds to the same query with its identification code after it is received. The above two identification codes could be received in any order. If there is a collision of signals and both responses are not received by the source device, the query is repeated.
In a similar embodiment, only the port to which the destination device is connected is equipped with an electronic module which receives and stores the responses from the destination device. It then sends its total response which includes the response from the destination device plus its identification code.
In a similar embodiment, each electronic module receives and stores the responses from the destination device and the responses from all electronic modules for each said port which is closer to the destination device along the network path than it is. It then sends its total response which includes said stored responses followed by its individual response containing its identification code.
In another embodiment, the port to which the destination device is connected is equipped with an electronic module. In response to an inquiry from the source device, an electronic module in the destination device sends an inquiry to the electronic module in the port and it responds to the destination device with its identification code. The destination device then responds to the source device with its identification code followed by the port identification code.
An application of the above embodiments is a VOIP telephone wherein it is desirable to know the physical location of the telephone in the event an emergency 911 call is made from the telephone. While the physical location of the telephone can be changed, the physical location of the port to which it is connected is known if the port's identification code is known. Therefore, the physical location of an emergency call made with any telephone connected to a particular port is known by the identification code associated with said port, with the port's identification code transmitted with each telephone call from a VOIP phone. Associations between identification codes and specific ports may be recorded in a table or map containing physical locations along with identification codes of ports at the physical locations. The physical location of each port may be fixed and documented in a software system which provides the physical location of a particular telephone which is connected to a port. In systems and methods according to some embodiments of the present invention, the software system may be adapted to communicate the physical location from which an emergency 911 call is made.
Although any known manner for providing power to an electronic identification module may be employed and would be considered to be within the scope of this invention, one manner that is specifically contemplated by the above referenced application is where the same local source of electrical power that provides power for a VOIP telephone provides power for the electronic identification module contained in the port to which the VOIP telephone is connected.
One embodiment of the present invention provides a communication and power patch cord that interconnects a local port to a VOIP telephone and also supplies the power to both the telephone and the port electronic module. As can be seen in FIG. 3, in one embodiment of the invention a patch cord 34 interconnects a local port 36 to a VoIP telephone 38. The patch cord 34 has ten conductors 40 at the local port 36 end, which includes eight signal conductors and two power conductors that are terminated in a ten-conductor jack 42. Nearer the telephone end the two power conductors 44 break out from the patch cord 34 and are terminated in parallel with first and second DC power plugs 46 and 48. The first DC power plug 46 connects to a power port 50 on the VOIP telephone 38 and the second DC power plug 48 connects to a power port 52 on a local power supply 54. Eight signal conductors 56 of the patch cord 34 are terminated in an 8-conductor jack 58 which connects to the signal port 60 of the VOIP telephone 38.
Use of the patch cord 34 ensures that if the VOIP telephone 38 has local power and is operational, the local port 36 also has power.
Alternative embodiments of the present invention allow for power to be supplied to a port and a destination device connected to the port. In the embodiment shown in FIG. 4, a patch panel 62 is provided between an Ethernet switch 64 and a port 66. A local power source 68, which may receive power from an AC cord 70, is connected to a VOIP phone 72 to provide power thereto. The VOIP phone, in turn, is connected to the port 66 with a cord 73 adapted to transmit both power and data from the VOIP phone 72 to the port 66.
FIG. 5 shows an alternative embodiment in which a port 74 is powered by a power source 76, with the port 74 adapted to supply power to an Internet Protocol device 78, which may be a VOIP phone, along a power-and-data connector 79.
Turning now to FIG. 6, an embodiment is shown in which a power supply 80 supplies power to a port 82 and a VOIP phone 84 using two separate connectors 83 and 85, each adapted to supply power and also to pass data between the port 82 and the VOIP phone 84, with data passing through the power adapter 80.
In FIG. 7, an embodiment is shown in which a power supply 86 supplies power to a VOIP phone 88 and to a port 90 using two different cords. A VOIP power cord 92 provides a power connection between the power supply 86 and the VOIP phone 88, and a port power and data patch cord 94 provides power to the port 90 and also provides a data connection between the port 90 and the VOIP phone 88.
An advantage of documentation systems according to some embodiments of the present invention is that they can be attained by adding said electronic modules and altering the software of said State of the Art documentation systems. The generation of any additional query signals to those generated by said State of the Art system is not required.
It should be noted that the above-described invention contemplates many embodiments not specifically described, and the explicitly described embodiments should be considered to be exemplary rather than definitional. As an example of an alternative not specifically described, without limitation or exclusion, the present invention may be employed in a network system having a distinct indicator, such as an LED, adjacent some or all of the LAN ports in the network. Such indicators may then be used to assist the reviser in identifying LAN ports requiring the insertion or removal of a cord plug.
While particular embodiments and applications of the present invention have been illustrated and described, it is to be understood that the invention is not limited to the precise construction and compositions disclosed herein and that various modifications, changes, and variations may be apparent from the foregoing descriptions without departing from the spirit and scope of the invention as defined in the appended claims.

## Claims

1. A patch cord for supplying power to and transferring data between a network wall port and a destination device in a network, the patch cord comprising:
a local network wall port termination comprising local port data conductors and local port power conductors;
a destination device data termination comprising destination device data conductors in communication with said local port data conductors, wherein said destination device data conductors and said local port data conductors are connected by one or more common, continuous, and unbroken data wires;
a destination device power termination comprising destination device power conductors; and

a power supply termination comprising power supply power conductors, said power supply power conductors being connected to said local port power conductors and said destination device power conductors adapted to provide power to said local port power conductors and to said destination device power conductors; and
wherein said local port power conductors, said destination device power conductors, and said power supply power conductors are connected by one or more common, continuous, and unbroken power wires.

2. The patch cord of claim 1 wherein said local network wall port termination comprises eight local port data conductors and two local port power conductors.

3. The patch cord of claim 2 wherein said destination device data termination comprises eight destination device data conductors in communication with said eight local port data conductors.

4. The patch cord of claim 3 wherein said destination device power termination comprises two destination device power conductors.

5. The patch cord of claim 4 wherein said power supply termination comprises two power supply power conductors.