METHOD AND APPARATUS FOR DIGITAL SUBSCRIBER LINE ACCESS MULTIPLEXER STACKING

Title:

METHOD AND APPARATUS FOR DIGITAL SUBSCRIBER LINE ACCESS MULTIPLEXER STACKING

Document Type and Number:

WIPO Patent Application WO2004066107

Kind Code:

A3

Abstract:

Stacking of Digital Subscriber Line Access Multiplexers (DSLAMs) is accomplished in multiple communications schemes using a master DSLAM (12) having a control circuit (24) and an uplink communication circuit (26) to a central office and two LVDS circuits (28a, 28b) for communication with two DSLAM boxes in adjacent circuit interconnection to the master DSLAM. Multiple slave DSLAMs (14) each having a programmable control circuit (34) and two LVDS circuits (36a, 36b) for communication with two DSLAM boxes immediately adjacent on either side in the circuit are connected in a ring or split stack arrangement to allow a round robin in a first selected mode and a split in a second selected mode to accommodate the desired structure and to provide redundancy for failure by reprogramming from round robin to split to communicate around a failed slave DSLAM.

Inventors:

SHI QUN

Application Number:

PCT/US2004/000262

Publication Date:

April 28, 2005

Filing Date:

January 06, 2004

Export Citation:

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Assignee:

UTSTARCOM INC (US)

International Classes:

H04J3/08; H04L12/56; H04L12/64; H04M1/00; H04M9/00; H04M11/06; G06F; (IPC1-7): H04J3/08

Foreign References:

US6680904B1	2004-01-20
US20020172273A1	2002-11-21
US6801533B1	2004-10-05
US6822944B1	2004-11-23

Other References: