Method and apparatus for DSL communication over a 4 wire system

摘要

A digital subscriber line 'XDSL' communication system for provisioning multi-tone modulated communications over two subscriber lines with two modems. The first modem has shared and discrete components forming a transmit path coupled exclusively to an end of a first of the two subscriber lines and a receive path coupled exclusively to an end of a second of the two subscriber lines. The second modem also has shared and discrete components forming a transmit path and a receive path having couplings of transmit and receive path components to corresponding opposing ends of the two subscriber lines diametrically opposite to those of the first modem, whereby the modems provision the first subscriber line exclusively for unidirectional communication from the first to the second modem, and provision the second subscriber line for unidirectional communication in the opposite direction, specifically from the second modem to the first modem. A related method and modem are disclosed.