Adtran seems to have come up with a pretty neat solution to the problem of getting fiber close enough to homes to then use G.fast broadband connections and it claims that it can savagely cut the costs of telcos installing fiber any closer than 650 meters away. The idea is to use bonded vectored VDSL2 lines as backhaul, not fiber for the last almost half mile. It is pretty well understood that G.fast, even the latest 212 MHz version, attenuates rapidly as the loop length goes over 100 meters. So the usual practice is to take fiber that close to the home. The new approach came out under a product Adtran calls its Gigabit-to-the-Basement (GTTB) solution, part of its strategy…