Method and system for rehoming a digital subscriber line access Multiplexer

• US 7,274,655 B1
• Filed: 05/31/2002
• Issued: 09/25/2007
• Est. Priority Date: 05/31/2002
• Status: Expired due to Fees

• Current Assignee: Bellsouth Intellectual Property Corporation (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Young, Randy S., Meggison, Earl C.
• Primary Examiner(s): To; Doris H.
• Assistant Examiner(s): Moore; Ian N.
• Application Number:
  US10/157,877
• Time in Patent Office: 1,943 Days
• Field of Search: 370/401, 370/395.2, 370/395.21, 370/395.5, 370/395.51, 370/395.52, 370/397, 714/716, 714/719, 379/1.01, 379/219, 379/221.01, 375/219, 375/222, 725/138, 725/114, 725/119
• US Class Current: 370/218
• CPC Class Codes: H04L 12/5601 Transfer mode dependent, e.g. ATM
• CPC Class Codes: H04M 11/062 using different frequency bands for speech and other data

Abstract

A method and system are provided for rehoming a digital subscriber line access multiplexer between a first data switch and a second data switch or ports on a single data switch. An extension permanent virtual circuit is established between the first data switch and the second data switch and a physical loop-back circuit is established at the second data switch for routing data from an output port of the second data switch to a temporary input port. A permanent virtual circuit between a data switch servicing a network service provider and the first data switch is removed, and a permanent virtual circuit between the data switch servicing the network service provider and the second data switch is established. Data is then routed between the network service provider and the digital subscriber line access multiplexer via the permanent virtual circuit between the data switch servicing the network service provider and the second data switch, the physical loop-back circuit, and the extension permanent virtual circuit.

Claims

1. A method for rehoming a digital subscriber line access multiplexer between a first data switch and a second data switch, the method comprising:

establishing an extension permanent virtual circuit between the first data switch and the second data switch;

establishing a physical loop-back circuit at the second data switch for routing data from an output port of the second data switch to a temporary input port of the second data switch;

removing a permanent virtual circuit between a data switch servicing a network service provider and the first data switch;

establishing a permanent virtual circuit between the data switch servicing the network service provider and said second data switch;

routing data between the network service provider and the digital subscriber line access multiplexer via the permanent virtual circuit between the data switch servicing the network service provider and the second data switch, the physical loop-back circuit, and the extension permanent virtual circuit;

establishing a data connection between the second data switch and the digital subscriber line access multiplexer;

routing data between the network service provider and the digital subscriber line access multiplexer via the permanent virtual circuit between the data switch servicing the network service provider and the second data switch, and the data connection between the second data switch and the digital sub scriber line access multiplexer; and

removing the extension permanent virtual circuit between the first data switch and the second data switch.

2. The method of claim 1, further comprising:

removing a data connection between the first data switch and the digital subscriber line access multiplexer.

3. The method of claim 2, further comprising:

removing the physical loop-back circuit from the second data switch.

4. The method of claim 1, wherein the first data switch, the second data switch, and the data switch servicing the network service provider comprise asynchronous transfer mode switches.

5. The method of claim 1, wherein removing a permanent virtual circuit between a data switch servicing a network service provider and the first data switch comprises removing a permanent virtual circuit between a data switch servicing a network service provider and the first data switch for each of a plurality of digital subscriber lines serviced by the digital subscriber line access multiplexer;

and

wherein establishing a permanent virtual circuit between the data switch servicing the network service provider and said second data switch comprises establishing a permanent virtual circuit between the data switch servicing the network service provider and said second data switch for each of the plurality of digital subscriber lines serviced by the digital subscriber line access multiplexer.

6. The method of claim 2, wherein the physical loop-back circuit and the data connection between the second data switch and the digital subscriber line access multiplexer operate at a first bandwidth and wherein the data connection between the first data switch and the digital subscriber line access multiplexer operates at a second bandwidth.

7. The method of claim 6, wherein the first bandwidth is greater than the second bandwidth.

8. A method for rehoming a network service provider between a first data switch and a second data switch, the method comprising:

establishing an extension permanent virtual circuit between the first data switch and the second data switch;

establishing a physical loop-back circuit at the second data switch for routing data from an output port of the second data switch to a temporary input port of the second data switch;

removing a permanent virtual circuit between a data switch servicing a digital subscriber line access multiplexer and the first data switch;

establishing a permanent virtual circuit between the data switch servicing the digital subscriber line access multiplexer and said second data switch;

routing data between the network service provider and the digital subscriber line access multiplexer via the permanent virtual circuit between the data switch servicing the digital subscriber line access multiplexer and the second data switch, the physical loop-back circuit, and the extension permanent virtual circuit;

establishing a data connection between the second data switch and the network service provider;

routing data between the network service provider and the digital subscriber line access multiplexer via the permanent virtual circuit between the second data switch and the data switch servicing the digital subscriber line access multiplexer, and the data connection between the second data switch and the network service provider; and

removing the extension permanent virtual circuit between the first data switch and the second data switch.

9. The method of claim 8, further comprising:

removing a data connection between the first data switch and the network service provider.

10. The method of claim 9, further comprising:

removing the physical loop-back circuit from the second data switch.

11. The method of claim 10, wherein the first data switch, the second data switch, and the data switch servicing the network service provider comprise asynchronous transfer mode switches.

12. The method of claim 11, wherein the physical loop-back circuit and the data connection between the second data switch and the network service provider operate at a first bandwidth and wherein the data connection between the first data switch and the network service provider operates at a second bandwidth.

13. The method of claim 12, wherein the first bandwidth is greater than the second bandwidth.