Abstract :
Many DSL technologies are currently taken into consideration to transform the last mile of copper infrastructure from the voice-grade world to the broadband universe. As far as the public discussion in the media is concerned ADSL is much praised and deserves a lot of attention. However despite its popularity ADSL does not seem to be able to solve the biggest challenges lurking for telecom operators relying on the copper infrastructure. Those challenges are to satisfy the need for symmetric data-rates and to cope with the emerging threats posed by cable network operators
