Frederick L Renner Deceased6 Melissa Ct, West Long Branch, NJ 07764

2002004, Apr 11, 2002

Jun 19, 2001

09/884369

Mohammad Laham - Basking Ridge NJ, US
Raj Acharya - Ocean NJ, US
Roman Antosik - Colts Neck NJ, US
Jayanta Das - Morganville NJ, US
Khem Gandhi - Marlboro NJ, US
Bharat Dave - Howell NJ, US
Jithamithra Sarathy - Atlantic Highlands NJ, US
Ronald Simprini - Red Bank NJ, US
Frank Hujber - Mercerville NJ, US
Boris Stefanov - Gillette NJ, US
Frederick Renner - West Long Branch NJ, US
Tan Thai - Jackson NJ, US
Ravi Vora - Freehold NJ, US

H04B010/08
H04J014/00

359/110000, 359/117000

In a maintenance system for a switch fabric in an optical switching network, a test signal is generated and multiplexed with the incoming traffic signal to form a composite signal. The composite signal is transmitted through the switch fabric via the traffic channel and then demultiplexed back into the traffic signal and the test signal, both of which are monitored by one or optical performance monitors. Thus, if the traffic signal is found to be defective, it is easy to determine whether the cause is the switch fabric or the incoming optical traffic signal that was already bad before entering the switch fabric.

2002004, Apr 25, 2002

Apr 18, 2001

09/837855

Mohammad Laham - Basking Ridge NJ, US
Raj Acharya - Ocean NJ, US
Roman Antosik - Colts Neck NJ, US
Jayantha Das - Morganville NJ, US
Bharat Dave - Howell NJ, US
Khem Gandhi - Marlboro NJ, US
Frank Hujber - Mercerville NJ, US
David Lowe - Howell NJ, US
Frederick Renner - West Long Branch NJ, US
Jiten Sarathy - Atlantic Highlands NJ, US
Ronald Simprini - Red Bank NJ, US
Boris Stefanov - Gillette NJ, US
Tan Thai - Jackson NJ, US
Ravi Vora - Freehold NJ, US

G02F001/00
G02F002/00
H01S003/00
H04B010/00
H04J014/00
H04B010/08

359/110000, 359/109000

The present invention provides an optical signal quality selection system for optimizing the quality of information transmission. The system splits an incoming optical signal into two equal signals. The split signals are evaluated in optical performance monitors, transmitting an electrical output message to a signal selector relating to the quality of the respective signal. A second electrical message is sent from the optical performance generator to an alarm indicator signal generator, which sends an optical signal to the signal selector to drop the one of the split signals and transmit the non-dropped split signal. An unequipped optical signal from an optical idle signal generator is triggered if no active optical signal is being transmitted.

2002013, Sep 19, 2002

Aug 17, 2001

09/931725

Jithamithra Sarathy - Atlantic Highlands NJ, US
Raj Acharya - Ocean NJ, US
Roman Antosik - Colts Neck NJ, US
Jayanta Das - Morganville NJ, US
Bharat Dave - Howell NJ, US
Khem Gandhi - Marlboro NJ, US
Frank Hujber - Mercerville NJ, US
Mohammad Laham - Basking Ridge NJ, US
Frederick Renner - West Long Branch NJ, US
Ronald Simprini - Red Bank NJ, US
Boris Stefanov - Gillette NJ, US
Tan Thai - Jackson NJ, US
Ravi Vora - Freehold NJ, US

G06F011/00

714/004000

A novel solution to fast network restoration is provided. In a network node, dedicated hardware elements are utilized to implement restoration, and these elements are linked via a specialized high speed bus. Moreover, the incoming and outgoing optical signals to each input/output port are continually monitored and their status communicated to such dedicated hardware via the high-speed bus. This provides a complete snapshot in virtually real time of the state of each input port on the node, and the switch map specifying the inter portal connections, to the dedicated control and restoration hardware. The specialized hardware detects trouble conditions and reconfigures the switching fabric. The invention enables a very fast and efficient control loop between the I/O ports, switch fabrics, and controllers. In a preferred embodiment the hardware comprises a Connection Manager and an Equipment Manager. The switching fabric control is also linked via the same high-speed bus, making changes to input/output port assignments possible in less than a millisecond and thus reducing the overall restoration time. In a preferred embodiment the status information is continually updated every 125 microseconds or less, and the switch fabric can be reconfigured in no more than 250 microseconds from occurrence of a trouble condition.