ADSL over wet string
I once had an issue where my phone line was completely dead, but I was still getting ADSL, just at very slow speeds. In the order of 1mbit.After the technician came he told me that one of the two phone line wires had been broken off at the exchange.In other words, there wasn't a complete electrical circuit.The phone was dead but ADSL still works without even having a complete circuit.I don't even understand how that can work at all.