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![]() Newps wrote: Now, every once in a while a substation goes down and nobody notices (happens once in about 50 years or so). In that case, somebody loses service after about two days. Think ATC would notice a problem by then? The generators already come online on automatically, we have one for the tower itself and one for the radar. With the phone company, the unmanned substations run from commercial power (where available) with battery backup. If one goes down, an alert sounds at local Central Office. If it stays down, someone goes out with a portable generator to keep the station up. The only time I heard of the system failing was ten years or so back in Brooklyn (IIRC). They had a power outage, someone shut off the alarms, but someone dropped the ball and never dispatched the repair crew. The batteries died after two days, and one section of the net went dead. Cost the phone company some outrageous sum because of the loss of service to parts of the Wall Street community. In the Central Offices, the generators kick in automatically. George Patterson The optimist feels that we live in the best of all possible worlds. The pessimist is afraid that he's correct. James Branch Cavel |
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