Remote test unit

Details Remote test unit Remote test unit

2007-05-01

2007-05-01

Pham, Chi (Department: 2616)

Multiplex communications

Diagnostic testing

Of a repeater

C370S241000, C370S243000, C370S245000, C370S248000, C370S249000, C370S250000, C370S253000, C370S359000, C370S421000, C379S027010, C379S027040, C379S029020, C379S032040, C375S219000, C375S220000, C375S221000, C375S224000

Reexamination Certificate

active

10029662

ABSTRACT:
A remote test unit (RTU) and method of operation are provided for utilizes the ability of an access matrix ability to route signals. The RTU can emulate a central Digital Subscriber Line Modem (DSLM-C) for testing customer premises equipment containing a remote Digital Subscriber Line Modem (DSLM-R). The RTU can also emulate a DSLM-R for testing central offices equipment including a digital subscriber line access multiplexer (DSLAM) containing a DSLM-C. The RTU can also emulate a concentrator connected to the DSLAM, a router connected to the concentrator, an Internet service provider (ISP) connected to the router, and a web site connected to the ISP over the Internet. The RTU can further test, using emulation, ISO/OSI layers defined in the ISO/OSI reference model which are connected to the DSLAM.

REFERENCES:
patent: 5444782 (1995-08-01), Adams et al.
patent: 5598455 (1997-01-01), Bliven et al.
patent: 5732213 (1998-03-01), Gessel et al.
patent: 6177801 (2001-01-01), Chong
patent: 6295339 (2001-09-01), Jollota
patent: 6584148 (2003-06-01), Zitting et al.
U.S. Appl. No. 09/636,433, filed Aug. 11, 2000, Chong.
U.S. Appl. No. 09/574,696, filed May 17, 2000, Chong.

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