Device and method for managing fault detection and fault isolation in voice and data networks

• US 7,289,449 B1
• Filed: 08/06/2001
• Issued: 10/30/2007
• Est. Priority Date: 03/20/2001
• Status: Expired due to Term

• Current Assignee: Valtrus Innovations Limited (f/k/a Dolya Holdco 9 Limited) (Key Patent Innovations Limited)
• Original Assignee: 3Com Corporation (HP Inc.)
• Inventors: Rubinstein, Alan, Patel, Bhakt
• Primary Examiner(s): Shah, Chirag G.
• Application Number:
  US09/923,848
• Time in Patent Office: 2,276 Days
• Field of Search: 370/242, 370/243, 370/244, 370/245, 370/249, 370/229, 370/445
• US Class Current: 370/245
• CPC Class Codes: H04L 12/6418 Hybrid transport
• CPC Class Codes: H04L 2012/6427 Subscriber Access Module; Concentrator; Group equipment
• CPC Class Codes: H04L 2012/6464 Priority
• CPC Class Codes: H04L 41/0659 by isolating or reconfiguring faulty entities
• CPC Class Codes: H04L 43/0811 by checking connectivity
• CPC Class Codes: H04Q 2213/13003 Constructional details of switching devices
• CPC Class Codes: H04Q 2213/13034 A/D conversion, code compression/expansion
• CPC Class Codes: H04Q 2213/1308 Power supply
• CPC Class Codes: H04Q 2213/13093 Personal computer, PC
• CPC Class Codes: H04Q 2213/13098 Mobile subscriber
• CPC Class Codes: H04Q 2213/13179 Fax, still picture
• CPC Class Codes: H04Q 2213/13339 Ciphering, encryption, security
• CPC Class Codes: H04Q 2213/13349 Network management
• CPC Class Codes: H04Q 2213/13386 Line concentrator
• CPC Class Codes: H04Q 2213/13389 LAN, internet
• CPC Class Codes: H04Q 3/0087 Network testing or monitoring arrangements

Abstract

The present invention provides a device and method for managing fault detection and isolation in voice and data networks. Specifically, the present invention is a device and method for fault detection and fault isolation that can be used to validate connectivity of a central site to a number of connected client devices. The present invention operates stage by stage, working from the central site back to a connected client device. The present invention can be controlled from a central maintenance station and as such does not require direct user enabling. In one embodiment, the present invention provides an intelligent device (e.g., an intelligent data concentrator) for coupling an electronic device to a network comprising a first interface for communicatively coupling the intelligent device to the network and a second interface for communicatively coupling the intelligent device to a plurality of client devices such that the client devices are communicatively coupled to the network. The intelligent device also comprises means for processing and interpreting data coupled to the first interface, and fault detection means coupled to the means for processing and interpreting data, wherein the fault detection means performs fault detection in the network. In one embodiment, the intelligent device operates in conjunction with a central control site in performing fault detection.

Claims

1. An intelligent data concentrator, comprising:

a housing having a first surface and a second surface and configured to be mounted substantially within a cavity in a wall in such a way that the first surface is internal to the wall and the second surface is external the cavity and substantially planar with the wall, said housing further comprising;

a first interface at the first surface operable to physically couple to a dedicated drop of network cabling terminating within the wall and to communicating couple said intelligent data concentrator to said network, said network having a head end at an opposite end of the network cabling, wherein said head end is a central control site at operable to remotely access said intelligent data concentrator over said network;

a second interface at the second surface comprising a plurality of communication ports for communicatively coupling said intelligent data concentrator to a plurality of client devices at said plurality of communication ports such that said client devices are communicatively coupled to said network;

means for processing and interpreting data internal to the housing and coupled to said first interface; and

fault detection means internal to the housing and coupled to said means for processing and interpreting data, said fault detection means operable to identify, based on a physical location of the housing and communications from the head end, a physical location of a fault in the network.

2. An intelligent data concentrator as recited in claim 1 wherein said head end is operable to remotely access said means for processing and interpreting data.

3. An intelligent data concentrator as recited in claim 1 wherein said fault detection means is configured to isolate faults in both an uplink from said head end of said network and a downlink from said head end of said network.

4. An intelligent data concentrator as recited in claim 1 wherein said fault detection means is selected from the group consisting essentially of:

a link beat signal fault detection, a ping signal fault detection, and a loop-back mode for fault detection.

5. An intelligent data concentrator as recited in claim 1 wherein said intelligent data concentrator is configured such that said intelligent data concentrator is provided power over said network.

6. An intelligent data concentrator as recited in claim 5 wherein said head end is configured to activate and deactivate said intelligent data concentrator over said network.

7. An intelligent data concentrator as recited in claim 5 wherein said intelligent data concentrator is configured to activate and deactivate said client devices.

8. An intelligent data concentrator as recited in claim 1 wherein said intelligent data concentrator employs time domain reflectometry measurement techniques such that said fault detection means is operable to determine a distance from said intelligent data concentrator to said fault.

9. An intelligent data concentrator as recited in claim 1 wherein said intelligent data concentrator is configured to receive data packets from said head end.

10. An intelligent data concentrator as recited in claim 9 wherein said data packets are for operating diagnostic tests at said intelligent data concentrator for validating network connections.

11. A method for fault detection in a network, said method comprising the steps of:

a) providing an intelligent data concentrator coupled to a network, said intelligent data concentrator comprising a housing having a first surface and a second surface and configured to be mounted substantially within a cavity in a wall in such a way that the first surface is internal to the wall and the second surface is external the cavity and substantially planar with the wall, said housing further comprising;

a first interface at the first surface operable to physically couple to a dedicated drop of network cabling terminating within the wall and to communicatively couple said intelligent data concentrator to said network, said network having a head end, wherein said head end is a central control site at operable to remotely access said intelligent data concentrator over said network;

a second interface at the second surface comprising a plurality of communication ports for communicatively coupling said intelligent data concentrator to a plurality of client devices at said plurality of communication ports such that said client devices are communicatively coupled to said network;

means for processing and interpreting data internal to the housing and coupled to said first interface; and

fault detection means internal to the housing and coupled to said means for processing and interpreting data, said fault detection means operable to identify, based on a physical location of the housing and communications from the head end, a physical location of a fault in the network;

b) monitoring said network for a fault by said intelligent data concentrator and said head end, such that said intelligent data concentrator and said head end operate in conjunction to identify a physical location of the fault.

12. A method as recited in claim 11 wherein said head end is operable to remotely access said means for processing and interpreting data.

13. A method as recited in claim 11 wherein said fault detector is configured to isolate faults in both an uplink from said head end or said network and a downlink from said head end of said network.

14. A method as recited in claim 11 wherein said fault detector is selected from the group consisting essentially of:

a link beat signal fault detector, a ping signal fault detector, and a loop-back mode for fault detection.

15. A method as recited in claim 11 wherein said intelligent data concentrator is configured such that said intelligent data concentrator is provided power over said network.

16. A method as recited in claim 15 wherein said head end is configured to activate and deactivate said intelligent data concentrator over said network.

17. A method as recited in claim 15 wherein said intelligent data concentrator is configured to activate and deactivate said client devices.

18. A method as recited in claim 11 wherein said intelligent data concentrator employs time domain reflectometry measurement techniques such that said fault detection means is operable to determine a distance from said intelligent data concentrator to said fault.

19. A method as recited in claim 11 wherein said intelligent data concentrator is configured to receive data packets from said head end.

20. A method as recited in claim 19 wherein said data packets are for operating diagnostic tests at said intelligent data concentrator for validating network connections.