A digital subscriber loop (DSL) modem and methods for controlling a DSL modem are provided which support simultaneous voice and data communications, wherein the voice communication is provided in a first frequency range and the data communication is provided in a second, non-overlapping frequency range....http://www.google.ca/patents/US6324268?utm_source=gb-gplus-sharePatent US6324268 - Splitter-less digital subscriber loop modems with improved throughput and voice and data separation
