VDSL is a transmission system which transmits LAN
signals without special relaying equipment by using the existing
Subscriber Line(one pair) in the neighborhood area. The transmission
distance is about 0.3 to 1.5km, as an asymmetric type, its download
speed is 13 to 52Mbps and upload speed is 1.5 to 2.3Mbps. The following
block diagram shows it.