Permitted attached private lines
Permitted attached private lines, abbreviated PAPL, are voice-grade telephone wires that run point-to-point (rather than point-to-exchange) between locations in the telephone company's copper network. Data can travel across the PAPL link (at a distance of up to 3.5 km) at speeds of around 2Mb per second.
Source: Wikipedia — Permitted attached private lines (CC BY-SA 4.0)