Apparatus for providing redundant services path to customer premises equipment

• US 6,556,660 B1
• Filed: 04/25/2001
• Issued: 04/29/2003
• Est. Priority Date: 04/25/2001
• Status: Expired due to Fees

• Current Assignee: AT&T Corporation (AT&T, Inc.)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Okoro, Jeremiah A., Li, Nga Ling, Miller, Robert Raymond II, Russell, Jesse Eugene
• Primary Examiner(s): TIEU, BINH KIEN
• Application Number:
  US09/841,975
• Time in Patent Office: 734 Days
• Field of Search: 379/1.01, 379/2, 379/8, 379/9.05, 379/9.06, 379/15.01, 379/16, 379/17, 379/22, 379/22.04, 379/22.08, 379/27.01, 379/27.06, 379/29.08, 379/32.01, 379/32.04, 379/26.01, 370/217, 370/219, 370/220, 370/225, 370/227, 370/244, 370/254
• US Class Current: 379/15.01
• CPC Class Codes: H04M 1/24 Arrangements for testing
• CPC Class Codes: H04M 3/08 Indicating faults in circuits or apparatus
• CPC Class Codes: H04M 3/2263 Network management

Abstract

An apparatus that provides a redundant path for providing service using existing or original equipment when failure or degradation of performance of new equipment is detected in a communication network. A controller module monitors the performance of new equipment used to provide improved services to service provider customers. When a failure in the new equipment is detected, the controller module outputs a control signal to switch processing from the new equipment to the existing equipment that is still available for use. In addition, processing may be switched from the new equipment to the existing equipment when the controller detects degradation in the performance of the new equipment so that loss of service is prevented. Therefore, the existing equipment acts as a redundant path for processing.

Claims

1. An apparatus for providing an operating path via one of an existing equipment module and a new equipment module in a network, the apparatus comprising:

signal supply module receiving signals from customer premises equipment;

a transfer switch connected between the output of the signal supply module and respective inputs of the new equipment module and the existing equipment module; and

a controller module, connected to respective outputs of the new equipment module and the existing equipment module, to the signal supply module and to the transfer switch, for controlling the operation of the signal supply module and the transfer switch to process signals via one of the new equipment module and the existing equipment module.

2. The apparatus according to claim 1, wherein the controller module is arranged to detect failure in the new equipment module and to output a control signal to the signal supply module and to the transfer switch to change processing from the new equipment module to the existing equipment module when failure in the new equipment module is detected.

3. The apparatus according to claim 1, wherein the controller module is arranged to monitor a signal output from the new equipment module representing the performance of the new equipment module and to switch processing from the new equipment module to the existing equipment module based upon the performance of the new equipment module.

4. The apparatus according to claim 3, wherein the controller module is arranged to detect a carrier-to-noise ratio of the signal output from the new equipment module, and switches processing from the new equipment module to the existing equipment module when the carrier-to-noise ratio of the signal is below a first predetermined threshold value.

5. An apparatus for providing an operating path via one of an existing equipment module and a new equipment module in a network, the apparatus comprising:

a signal supply module receiving signals from customer premises equipment;

a transfer switch connected between the output of the signal supply module and respective inputs of the new equipment module and the existing equipment module; and

a controller module, connected to respective outputs of the new equipment module and the existing equipment module, to the signal supply module and to the transfer switch, for controlling the operation of the signal supply module and the transfer switch to process signals via one of the new equipment module and the existing equipment module,

wherein the controller module comprises;

a diode for receiving the signal output from the new equipment module;

a first comparator that compares a signal output from the diode with a first predetermined threshold value;

a switch for receiving one of an output signal from the first comparator and a control signal from a central office;

wherein the controller module controls the operation of the signal supply module and the transfer switch via an output from the switch to process signals via one of the new equipment module and the existing equipment module based upon one of the output signal from the comparator and the control signal from the central office.

6. The apparatus according to claim 5, wherein the controller module determines that a failure has occurred in the new equipment module when the signal from the diode is below the first predetermined threshold value, and controls the switch to output a signal to the signal supply module and to the transfer switch to change processing from the new equipment module to the existing equipment module.

7. The apparatus according to claim 5, wherein the controller module further comprises:

a second comparator that compares the signal from the diode with a second predetermined threshold value and outputs an output signal to the central office and to the switch, wherein the output signal from the second comparator controls the switch to receive one of the output from the first comparator and the control signal from the central office.

8. The apparatus according to claim 7, wherein the controller module determines that the performance of the new equipment module has degraded when the signal from the diode is below the second predetermined threshold value, and controls the switch to receive the control signal from the central office and to output the signal to the signal supply module and to the transfer switch to change processing from the new equipment module to the existing equipment module.

9. An apparatus for providing an operating path via one of an existing equipment module and a new equipment module in a network, the apparatus comprising:

first means for receiving signals from customer premises equipment;

second means, connected between the output of the first means and respective inputs of the new equipment module and the existing equipment module; and

third means, connected to respective outputs of the new equipment module and the existing equipment module, to the first means, and to the second means, for controlling the operation of the first means and the second means to process signals via one of the new equipment module and the existing equipment module.

10. An apparatus for providing an operating path via one of an existing equipment module and a new equipment module in a network, the apparatus comprising:

first means for receiving signals from customer premises equipment;

second means, connected between the output of the first means and respective inputs of the new equipment module and the existing equipment module; and

third means, connected to respective outputs of the new equipment module and the existing equipment module, to the first means, and to the second means, for controlling the operation of the first means and the second means to process signals via one of the new equipment module and the existing equipment module,

wherein the third means comprises;

first receiving means for receiving the signal output from the new equipment module;

first comparing means for comparing a signal output from the first receiving means with a first predetermined threshold value;

second receiving means for receiving one of an output signal from the first comparing means and a control signal from a central office;

wherein the third means is arranged to control the operation of the first means and the second means via an output from the second receiving means to process signals via one of the new equipment module and the existing equipment module based upon one of the output signal from the first comparing means and the control signal from the central office.

11. The apparatus according to claim 10, wherein the third means further comprises:

second comparing means for comparing the signal from the first receiving means with a second predetermined threshold value and for outputting an output signal to the central office and to the second receiving means, wherein the output signal from the second comparing means controls the first receiving means to receive one of the output from the first comparing means and the control signal from the central office.