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Do ethernet cards protect against direct current?
Hello all. I've setup a low grade ethernet crossover connection using the house's two unused pairs of phone wires. I am worried about the chance of current from the active phone line (48 volts here in the US) making its way onto the lines used for ethernet.
I suppose all ethernet cards would have a high pass filter that would completely prevent any significant direct current from flowing into the device, so I should be safe right?
Last edited by bobwall; 01-16-2005 at 10:09 AM.
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