How does ADSL2+ work?
The copper wires that are used to carry your telephone conversations are actually capable of transmitting information at much higher speeds than is needed just for telephone calls. This extra bandwidth in the copper wire is normally wasted, but ADSL2+ technology allows us to take advantage of the available bandwidth by using additional equipment to transfer data at a higher frequency than that used for voice calls. Sophisticated electronics are used to cope with electrical noise on the line and to ensure that there is no interference between the voice and data sharing the line. The higher the frequency that is used to send the signal, the faster the signal will degrade over distance. Because ADSL2+ uses very high frequencies, there are limits on the distances over which that the signal can be reliably received. Unfortunately, customers that live too far from their exchange will therefore not be able to take advantage of this technology.
