Auxiliary circuit switching for provisioning and/or repair in a fiber-to-the-curb system

• US 5,859,895 A
• Filed: 12/07/1995
• Issued: 01/12/1999
• Est. Priority Date: 12/07/1995
• Status: Expired due to Term

• Current Assignee: Verizon Patent and Licensing Incorporated (Verizon Communications Inc.)
• Original Assignee: Bell Atlantic Network Services, Inc. (Verizon Communications Inc.)
• Inventors: Blake, John, Smith, Carolyn, Highley, Patricia, Ragg, Walter, Pomp, Steve, Mullally, John
• Primary Examiner(s): LOOMIS, PAUL A
• Application Number:
  US08/568,762
• Time in Patent Office: 1,132 Days
• Field of Search: 379/1, 379/2, 379/5, 379/6, 379/22, 379/27, 379/29, 379/164, 379/165, 379/387, 379/397, 379/220, 379/221, 379/399, 359/125, 359/117, 359/118, 359/126, 359/173, 359/167, 370/225, 370/228, 370/227, 370/221, 370/217
• US Class Current: 379/9.05
• CPC Class Codes: H04M 3/12 Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error
• CPC Class Codes: H04M 3/2245 Management of the local loop plant
• CPC Class Codes: H04M 3/303 and using PCM multiplexers, e.g. pair gain systems
• CPC Class Codes: H04Q 11/0062 Network aspects
• CPC Class Codes: H04Q 11/0067 Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
• CPC Class Codes: H04Q 2011/0081 Fault tolerance; Redundancy; Recovery; Reconfigurability

Abstract

The drop wiring from an optical network unit (ONU) to a customer premise includes one or more working circuits and at least one auxiliary circuit. The network interface device at the customer premises is switchable. The interface device normally couples the working circuits to corresponding customer premises wiring circuits. The ONU and the switchable network interface device (SNID) can be automatically activated to activate communication via the auxiliary circuit. For example, if a primary telephone circuit fails or is predicted to fail, the ONU is automatically instructed to place the telephone communications on the auxiliary circuit, and the network instructs the SNID to connect the auxiliary circuit to the customer premises telephone wiring. The automatic activation and switching also facilitates automatic provision of a second line service using the auxiliary circuit.

Claims

1. A communication network, comprising:

a central office switching system;

an optical fiber communication link providing a plurality of two-way communication channels to the central office switching

wire circuits running to a plurality of respective customer premises;

an optical network unit coupled to the optical fiber communication link providing an interface between the two-way communication channels on the optical fiber communication link and the wire circuits; and

a switchable network interface device on one of the customer premises, wherein;

said switchable network interface device connects to customer premises wiring circuitry and to a primary wire circuit and an auxiliary wire circuit, both running from the optical network unit, and

said switchable network interface device comprises a switch providing selective connection of the customer premises wiring circuitry to the primary and auxiliary wire circuits.

2. A network as in claim 1, wherein the switchable network interface device further comprises a controller responsive to switching control signals received via at least one of the primary and auxiliary wire circuits for controlling the switch.

4. A network as in claim 1, wherein the optical network unit comprises means for selectively activating communication between two-way communication channels on the optical fiber communication link and the primary and auxiliary wire circuits.

6. A network as in claim 1, wherein the central office switching system comprises a host digital terminal coupled to the optical fiber communication link and a switch coupled to the host digital terminal.

7. A network as in claim 6, wherein the switch in the central office switching system comprises a telephone service switch.

8. A network as in claim 1, wherein each of the primary and auxiliary wire circuits and the at least one customer premises wiring circuit comprises a wire telephone circuit.

9. A network as in claim 8, wherein each wire telephone circuit comprises a twisted wire pair.

3. A communication network comprising:

a central office switching system;

an optical fiber communication link providing a plurality of two-way communication channels to the central office switching system;

wire circuits running to a plurality of respective customer premises;

an optical network unit coupled to the optical fiber communication link providing an interface between the two-way communication channels on the optical fiber communication link and the wire circuits; and

a switchable network interface device on one of the customer premises, wherein;

said switchable network interface device connects to at least one customer premises wiring circuit and to a primary wire circuit and an auxiliary wire circuit running from the optical network unit,

said switchable network interface device comprises a switch providing selective connection of the at least one customer premises wiring circuit to the primary and auxiliary wire circuits, and

said switchable network interface device further comprises a controller responsive to switching control signals received via at least one of the primary and auxiliary wire circuits for controlling the switch, and

wherein the central office switching system includes a switching signal source providing said control signals.

5. A communication network comprising:

a central office switching system;

an optical fiber communication link providing a plurality of two-way communication channels to the central office switching system;

wire circuits running to a plurality of respective customer premises;

an optical network unit coupled to the optical fiber communication link providing an interface between the two-way communication channels on the optical fiber communication link and the wire circuits; and

a switchable network interface device on one of the customer premises, wherein;

said switchable network interface device connects to at least one customer premises wiring circuit and to a primary wire circuit and an auxiliary wire circuit running from the optical network unit, and

said switchable network interface device comprises a switch providing selective connection of the at least one customer premises wiring circuit to the primary and auxiliary wire circuits;

wherein the optical network unit comprises means for selectively activating communication between two-way communication channels on the optical fiber communication link and the primary and auxiliary wire circuits; and

further comprising an operations control center in communication with the optical network unit for controlling the selective activation.

10. A switchable network interface device comprising:

a customer side coupler for connection to customer premises wiring circuitry;

a network side coupler for connection to primary and auxiliary lines running from a communication network; and

a switch connected between the customer side coupler and the network side coupler, said switch capable of providing selective connection of the customer premises wiring circuitry to one of the primary and auxiliary lines and of the customer premises wiring to both of the primary and auxiliary lines, said selective connection made in response to switching control signals received from the network.

11. A switchable network interface device as in claim 10, wherein the network side coupler provides connections for primary and auxiliary lines which comprise wire circuits.

12. A switchable network interface device as in claim 11, wherein the network side coupler provides connections for twisted wire pair circuits.

13. A switchable network interface device as in claim 10, wherein the customer side coupler provides connection for at least one twisted wire pair circuit.

14. A switchable network interface device as in claim 10, wherein the customer side coupler provides connection for at least one broadband circuit.

15. A switchable network interface device as in claim 10, further comprising a diagnostic device for conducting test measurements on circuits coupled to the switchable network interface device and communicating test measurement results through the network side coupler.

16. A switchable network interface device as recited in claim 10, further comprising a controller for said switch, said controller connected to said network side coupler for receiving said switching control signals.

17. A switchable network interface device as recited in claim 10, wherein said primary and auxiliary lines are a bundled drop cable wires.

18. A switchable network interface device as recited in claim 10, wherein said communication network comprises a central office switching system and said switching control signals are generated by a switching signal source in said central office switching system.

19. A switchable network interface device as recited in claim 18, wherein said communications network further comprises an operations control center, said switching control signals being transmitted from said switching signal source to said controller in response to instructions from said operations control center.

20. A switchable network interface device, comprising:

a customer side coupler for connection to a customer premises wiring circuit;

a network side coupler for connection to primary and auxiliary lines running in a bundled cable drop from a communication network; and

a switch connected between the customer side coupler and the network side coupler for providing selective connection of the customer premises wiring circuit to the primary and auxiliary lines;

a controller responsive to a first control signal received via the network side coupler for controlling the switch to couple the primary line to the customer premises wiring circuit and responsive to a second control signal received via the network side coupler for controlling the switch to couple the auxiliary line to the customer premises wiring circuit.

21. A switchable network interface device as recited in claim 20, wherein said customer side coupler comprises:

a first customer side terminal for connection to a first customer premises wiring circuit line; and

a second customer side terminal for connection to a second customer premises wiring circuit line; and

said network side coupler comprises;

a first network side terminal for connection to said primary line; and

a second network side terminal for connection to said auxiliary line.

22. A switchable network interface device as in claim 21, wherein in response to alternate first and second control signals the controller activates the switch to provide alternative connections of the first and second network side terminals to one of the first and second customer side terminals.

23. A switchable network interface device as in claim 21, wherein when the switch provides a connection between the first network side terminal and the first customer side terminal, the controller is responsive to a predetermined control signal for activating the switch to provide a connection between the second network side terminal and the first customer side terminal.

24. A method of automatic restoration of communication service, comprising the steps of:

providing a bundled cable drop including a primary telephone line and an auxiliary telephone line from a communication network node to a customer premise;

connecting customer premises wiring to the primary telephone line;

identifying a need for restoration of communication service from the network node to the customer premises wiring;

automatically activating service on the auxiliary communication circuit in response to said identifying step; and

automatically switching the connection of the customer premises wiring over to the auxiliary telephone line.

25. A method as in claim 24, wherein when the step of automatically switching the connection of the customer premises wiring over to the auxiliary telephone line comprises:

sending a control signal through the primary telephone line or the auxiliary telephone line to the customer premise; and

in response to the control signal, activating a switch coupled between the customer premises wiring and the primary and auxiliary telephone lines.

26. A method as in claim 24, wherein the customer premises wiring comprises a twisted wire pair.

27. A method as in claim 24, wherein the customer premises wiring comprises a broadband circuit.

28. A method as in claim 24, wherein the step of identifying a need for rest-oration of communication service comprises receiving a report of a service problem from a subscriber.

29. A method as in claim 24, wherein the step of identifying a need for restoration of communication service comprises automatically detecting a fault on the primary telephone line.

30. A method as in claim 24, wherein the step of identifying a need for restoration of communication service comprises:

automatically testing conditions on the primary telephone line; and

predicting a fault on the primary communication circuit in response to the tested conditions on the primary telephone line.

31. A method comprising the steps of:

providing a bundled cable drop including a primary telephone line and an auxiliary telephone line from a communication network node to a customer premises;

connecting a first customer premises wiring circuit through a switch to the primary telephone line;

providing a first service to the customer premises via the primary telephone line;

receiving a request for a second telephone line;

automatically activating service on the auxiliary communication telephone line;

automatically connecting the auxiliary circuit through the switch in response to said receiving step; and

providing the second service to the customer premises via the auxiliary telephone line.