H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 17/00 (2006.01) H04B 1/00 (2006.01) H04L 1/22 (2006.01) H04L 29/14 (2006.01)
Patent
CA 2388152
A network switch and method of switching are provided, in which first and second signal converters convert electrical signals to optical signals and vice versa. The network switch monitors alarm contacts and power drawn by the first and second signal converters, and switches from one to the other in the case of an alarm condition or power loss. In order to force a corresponding switch at the remote end, power is removed from one of the signal converters in order to force an alarm in the corresponding signal converter at the remote end.
Finlayson & Singlehurst
Hubbell Incorporated
Pulse Communications Inc.
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