Frontier is famous in the telecom/ISP network engineering community for having the absolute worst shit tier quality of old copper phone wiring running ADSL2+.

Frontier is famous in the telecom/ISP network engineering community for having the absolute worst shit tier quality of old copper phone wiring running ADSL2+. Street side pedestals wrapped in plastic garbage bags and such. What you've got there is probably dialtone POTS copper phone wiring that was installed in the 1960s to 1980s at a very long loop length from where the DSLAM is installed. And wet, dirty connections, noisy with crosstalk. Until they come up with a firm financial commitment to overbuild their legacy POTS dialtone copper phone wiring outside plant with singlemode fiber it's only going to get worse.