If you're talking about something like what Verizon offers, there's a little filter that goes in line. In case of a thunderstorm, a lightening strike can blow the filter and after that, unless you buy a replacement, when the phone rings, it will knock you off line. And, the little buggers aren't cheap either.
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( R E T I R E D , and glad of it)
YES ! ! ! There is life after trucking.
a GOOD life
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