Multiplex communication system and method

Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...

Reexamination Certificate

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C370S225000

Reexamination Certificate

active

10335951

ABSTRACT:
Disclosed are the multiplex communication system and the method therefore. A fault detection part of a duplex switching device detects it as generation of fault when recognizable signals are not detected from a connected line within a prescribed time. When the fault detection part detects the generation of fault in the present system line, the line switching part switches the lines from the present line to the standby line to perform communication between a terminal device and another terminal device therethrough. Also, the fault detection part notifies the generation of fault to the other duplex switching device after a prescribed switching protection time has passed from the time of the fault detected by the fault detection part, so the selection of the lines becomes consistent.

REFERENCES:
patent: 5081619 (1992-01-01), Nagata
patent: 5275712 (1994-01-01), Hetrick
patent: 5784547 (1998-07-01), Dittmar et al.
patent: 5802263 (1998-09-01), Dittmar et al.
patent: 5892893 (1999-04-01), Hanf et al.
patent: 6061156 (2000-05-01), Henmi
patent: 6097516 (2000-08-01), Almstrom
patent: 6115831 (2000-09-01), Hanf et al.
patent: 6122753 (2000-09-01), Masuo et al.
patent: H1882 (2000-10-01), Asthana et al.
patent: 6173411 (2001-01-01), Hirst et al.
patent: 6442694 (2002-08-01), Bergman et al.
patent: 6477288 (2002-11-01), Sato
patent: 6493341 (2002-12-01), Datta et al.
patent: 6631134 (2003-10-01), Zadikian et al.
patent: 6639893 (2003-10-01), Chikenji et al.
patent: 6885632 (2005-04-01), Mattson
patent: 6912671 (2005-06-01), Christensen et al.
patent: 6975811 (2005-12-01), Kakizaki et al.
patent: 6977886 (2005-12-01), Tada
patent: 7050468 (2006-05-01), Seto et al.
patent: 7085225 (2006-08-01), Schaller et al.
patent: 2001/0026384 (2001-10-01), Sakano et al.
patent: 2002/0034259 (2002-03-01), Tada
patent: 2002/0194547 (2002-12-01), Christensen et al.
patent: 2003/0112746 (2003-06-01), Schaller et al.
patent: 2005/0147087 (2005-07-01), Sternagle
patent: 2005/0157707 (2005-07-01), Sternagle
patent: 2006/0080469 (2006-04-01), Coward et al.
patent: 1170485 (1995-12-01), None
patent: 0456206 (1991-11-01), None
patent: 0920152 (1999-06-01), None
patent: 02-131040 (1900-05-01), None
patent: 02-141041 (1990-05-01), None
patent: 03-104366 (1991-05-01), None
patent: 04-020029 (1992-01-01), None
patent: 04-068932 (1992-03-01), None
patent: 04-127630 (1992-04-01), None
patent: 04-192654 (1992-07-01), None
patent: 05-250200 (1993-09-01), None
patent: 06-066763 (1994-03-01), None
patent: 06-197044 (1994-07-01), None
patent: 07-030572 (1995-01-01), None
patent: 08-116332 (1996-05-01), None
patent: 09-046735 (1997-02-01), None
patent: 10-224828 (1998-08-01), None
patent: 10-285174 (1998-10-01), None
patent: 10-303869 (1998-11-01), None
patent: 10-336079 (1998-12-01), None
patent: 10-336320 (1998-12-01), None
patent: 11-150511 (1999-06-01), None
patent: 2000-004216 (2000-01-01), None
patent: 2000-156681 (2000-06-01), None
patent: 02-224531 (2000-09-01), None
patent: 2000-269890 (2000-09-01), None
patent: 2000-269974 (2000-09-01), None
patent: 2001-044958 (2001-02-01), None
patent: 2001-156758 (2001-06-01), None
patent: 2001-285323 (2001-10-01), None
patent: 2001-285323 (2001-10-01), None
patent: 2001-298461 (2001-10-01), None
patent: WO97/42729 (1997-11-01), None
patent: WO 98/21853 (1998-05-01), None
patent: WO00/76147 (2000-12-01), None
Ellinas et al.; Automatic protection switching for link failures in optical networks with bi-directional links; Global Telecommunications Conference, 1996. GLOBECOM '96. Communications: The Key to Global Prosperity vol. 1, Nov. 18-22, 1996 pp. 152-156 vol. 1.
Neusy et al.; Availability analysis of optical shared protection rings for long haul networks; Optical Fiber Communication Conference, 1999, and the International Conference on Integrated Optics and Optical Fiber Communication. OFC/IOOC '99. Technical Digest vol. 1, Feb. 21-26, 1999 pp. 176-179 vol. 1.
Ellinas et al.; Protection Cycles in Mesh WDM Networks; IEEE Journal on Selected Areas in Communications, vol. 18, No. 10, Oct. 2000.

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