ironman wroteI guess it would be a Microwave link from Service providers, where i used to work, we had a 40 Mbps Down, 20 Mbps UP, and we got it from IDM using a Microwave link from Pesco.
This is pretty accurate, I used to go to an internet cafe in 2005, and they had a dedicated Microwave link with a very low latency, back then it was around 80~100 ms, and that was before the IMEWE cable ever existed.