H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
H04Q 1/24 (2006.01) H04B 1/74 (2006.01) H04L 12/56 (2006.01) H05K 10/00 (2006.01)
Patent
CA 2287607
An arrangement is disclosed for providing equipment 1 x N protection switching in a communications network element or system having a plurality of working port units that process communication signals passing between a first and a second location, having a backup port unit that is used to replace a defective one of the working port units, having a protection switch unit that switches the backup port unit for a defective working port unit, and having a controller for monitoring the operational status of the working port units and upon determining that one of the working port units is defective initiates the switch of the backup port unit for the defective working port, wherein the communication signals are not sent from a working port unit to the protection switching unit and thence to the backup port unit until the working port unit is determined to be defective, thus reducing crosstalk at the protection switching unit, and after the switch is accomplished a verification signal is sent back to the controller that all switching has been accomplished and the backup port is processing the communication signals that had been processed by the defective working port unit. The controller initiates the switching process using the backup port unit which in turn signals the protection unit to connect the signals from the defective working port unit to the backup port unit, and the protection switching unit then forces the defective working port unit to switch the communications signals it had been processing to the protection switching unit. In the event that the defective working port unit has no electrical power the protection switching unit temporarily provides power thereto until it is forced to transfer the communications signals to the protection switch unit for processing by the backup port unit and until the defective working port unit has been replaced.
Marcotte Donald Roger
Sivarasa Sriram
Kirby Eades Gale Baker
Lucent Technologies Inc.
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