With this modem and the counterpart of the same company, we easily can build a 100Mbit connection between rooms without laying new cables. That would be in our case has become very expensive because it would have affected tens of zones and each wall opening would have to be re-sealed expensive. So we could use a simple 2-wire telephone line.
The compound is stable, with 100Mbit although not as fast as usual in the network, but perfectly adequate for normal work! Overall, the cable about 100m long and going over some distribution, thus already a certain Herasuforderung.
It is easy to configure and the connection is automatically negotiated. In poorer cables and larger lengths also a slower connection will be negotiated.