A modem for use in Digital Subscriber Line communications transmits and receives data over the local subscriber loop in common with voice information over the loop, while avoiding the need for voice/data splitters. The modem responds to disruptions associated with "disturbance events" such as on-hook...http://www.google.com/patents/US6266348?utm_source=gb-gplus-sharePatent US6266348 - Splitterless multicarrier modem
