Re:ADSL works over wet string (2017)
by Suchos on Saturday December 04, 2021 @11:26AM
(#29441844)
There is company in Czechia which provides optics via sewage. I guess it is cheaper to use existing infrastructure than to place new pipes under roads.
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Sounds a bit like this "How TiSP Works" https://archive.google.com/tisp/install.html