Method and system for rehoming a digital subscriber line access multiplexer

• US 8,243,584 B2
• Filed: 09/11/2007
• Issued: 08/14/2012
• Est. Priority Date: 05/31/2002
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Young, Randy S., Meggison, Earl C.
• Primary Examiner(s): Jagannathan, Melanie
• Assistant Examiner(s): CHANG, STEPHANIE L
• Application Number:
  US11/853,464
• Publication Number:
  US 20080043926A1
• Time in Patent Office: 1,799 Days
• Field of Search: 370/352, 370/248, 370/249, 714/716, 714/717
• US Class Current: 370/217
• 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 port and a second data port on a data switch. The method includes establishing a physical loop-back circuit between the second data port and a temporary input port of the data switch, establishing an extension permanent virtual circuit between the temporary input port and the first data port, removing a permanent virtual circuit between a data switch servicing a network service provider and the first data port, establishing a permanent virtual circuit between the data switch servicing the network service provider and the second data port, and 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 port, 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 port and a second data port, both of which reside on a first data switch, the method comprising:

establishing a physical loop-back circuit between the second data port and a temporary input port of the first data switch;

establishing an extension permanent virtual circuit between the temporary input port and the first data port, the first data port coupled to a first data connection between the first data switch and the digital subscriber line access multiplexer;

responsive to establishing the extension permanent virtual circuit, removing a permanent virtual circuit between a second data switch, the second data switch servicing a network service provider and the first data port;

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

responsive to establishing the new permanent virtual circuit, routing data between the network service provider and the digital subscriber line access multiplexer via the new permanent virtual circuit between the second data switch the second data port, the physical loop-back circuit, the extension permanent virtual circuit, and the first data connection between the first data switch and the digital subscriber line access multiplexer;

removing the physical loop-back circuit from the second data port;

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

responsive to removing the physical loop-back circuit, routing data between the network service provider and the digital subscriber line access multiplexer via the new permanent virtual circuit between the second data switch and the second data port and the second data connection between the second data port and the digital subscriber line access multiplexer;

removing the extension permanent virtual circuit between the first data port and the temporary input port; and

disconnecting the first data connection between the first data port of the first data switch and the digital subscriber line access multiplexer.

2. The method of claim 1, wherein the physical loop-back circuit and the second data connection between the second data port and the port on the digital subscriber line access multiplexer operate at a first bandwidth and wherein the first data connection between the first data port and the digital subscriber line access multiplexer operates at a second bandwidth.

3. The method of claim 2, wherein the first bandwidth is greater than the second bandwidth.

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

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

and

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