System and method for remote testing of a subscriber loop

• US 8,750,460 B2
• Filed: 04/28/2008
• Issued: 06/10/2014
• Est. Priority Date: 04/28/2008
• Status: Active Grant

• Current Assignee: CenturyLink Intellectual Property LLC (Lumen Technologies, Inc.)
• Original Assignee: CenturyLink Intellectual Property LLC (Lumen Technologies, Inc.)
• Inventors: Walters, Robert, Jensen, Steven M.
• Primary Examiner(s): Jamal, Alexander
• Application Number:
  US12/110,545
• Publication Number:
  US 20090268878A1
• Time in Patent Office: 2,234 Days
• Field of Search: 379/29.01, 379/26.01, 379/27.01, 379/27.04
• US Class Current: 379/27.01
• CPC Class Codes: H04M 3/30 for subscriber's lines , for the local loop
• CPC Class Codes: H04M 3/305 testing of physical copper line parameters, e.g. capacitance or resistance locating faults in cables G01R31/08

Abstract

A system and method for testing a subscriber loop. A maintenance port of a switch is configured to dial a phone number associated with a subscriber loop. A remote device is commanded to initiate a test for the subscriber loop utilizing a test bus. Test measurements of the subscriber loop are received from a remote test head.

Claims

1. A method for testing a subscriber loop, the method comprising:

providing a test head at a digital loop carrier;

providing a communications management system including a test operating system;

connecting, through the test head and through the communications management system, the digital loop carrier to a maintenance port of a switch;

loading, from the test operating system, access information in the maintenance port;

configuring the maintenance port to dial a phone number associated with a subscriber loop, wherein dialing the phone number associated with the subscriber loop causes a call path to be set up between the digital loop carrier and the subscriber loop for testing the subscriber loop;

commanding, with a test client communicating with the test operating system, the digital loop carrier to initiate a test of the subscriber loop utilizing a test bus;

receiving test measurements of the subscriber loop from the test head co-located with the digital loop carrier;

determining if the subscriber loop is available for testing; and

if the subscriber loop is unavailable for testing, configuring the maintenance port to dial the phone number associated with the subscriber loop again within a preset time period to set up the call path between the digital loop carrier and the subscriber loop.

2. The method of claim 1, wherein the configuring, commanding, and receiving are performed by the test operating system executed by the communications management system.

3. The method of claim 2, wherein the test operating system is controlled by a user communicating with the test operating system through a test client.

4. The method of claim 2, wherein the test operating system is configured to load the phone number into the maintenance port of the switch.

5. The method of claim 1, wherein the commanding step is performed in response to determining the subscriber loop is available for testing.

6. The method of claim 1, wherein the test head at the digital loop carrier is not connected to the switch to dial in numbers associated with the subscriber loop for testing at the digital loop carrier.

7. The method according to claim 2, wherein the test operating system communicates with the switch through a switch interface, and wherein the test operating system communicates with the test head through a test head interface.

8. A telecommunications system for testing a subscriber loop, the telecommunications system comprising:

a test head at a digital loop carrier;

a communications management system including a test operating system;

a maintenance port of a switch, connected through the test head and through the communications management system to the digital loop carrier wherein;

access information is loaded from the test operating system to the maintenance port;

the maintenance port is configured to dial a phone number associated with a subscriber loop, wherein dialing the phone number associated with the subscriber loop causes a call path to be set up between the digital loop carrier and the subscriber loop for testing the subscriber loop;

a test client communicating with the test operating system commands the digital loop carrier to initiate a test of the subscriber loop utilizing a test bus;

wherein

test measurements of the subscriber loop are received from the test head co-located with the digital loop carrier;

determine whether the subscriber loop is available for testing; and

if the subscriber loop is unavailable for testing, the maintenance port is configured to dial the phone number associated with the subscriber loop again within a preset time period to set up the call path between the digital loop carrier and the subscriber loop.

9. The telecommunications system according to claim 8, wherein the test client receives test measurements indicating the performance of the subscriber loop for taking a corrective action.

10. The telecommunications system according to claim 8, wherein the switch initiates testing at the digital loop carrier once the subscriber loop is available.

11. A communications management system for testing a subscriber loop comprising:

a processor for executing a test operating system, the test operating system including a set of instructions; and

a non-transitory memory for storing the set of instructions, wherein the set of instructions are operable when executed by the processor to;

load, from the test operating system, access information to a maintenance port of a switch;

configure the maintenance port to dial a phone number associated with a subscriber loop, wherein dialing the phone number associated with the subscriber loop causes a call path to be set up between the digital loop carrier and the subscriber loop for testing the subscriber loop;

command, with a test client communicating with the test operating system, the digital loop carrier to initiate a test of the subscriber loop utilizing a test bus;

receive test measurements of the subscriber loop from a test head co-located with the digital loop carrier;

determine whether the subscriber loop is available for testing before initiating testing; and

if the subscriber loop is unavailable for testing, configure the maintenance port to dial the phone number associated with the subscriber loop again within a preset time period to set up the call path between the digital loop carrier and the subscriber loop.

12. The communications management system according to claim 11, wherein the test operating system loads the digits of the phone number into the maintenance port for testing.

13. The communications management system according to claim 11, wherein the test operating system communicates with the switch to determine whether the subscriber loop is available before initiating testing.

14. The communications management system according to claim 11, wherein the test operating system communicates with the switch through a maintenance port interface, and wherein the test operating system communicates with the test head through a test head interface.