Patent ID: 6888884

Claim:
A method for dynamically inverting an Asymmetric Digital Subscriber Line (ADSL) system comprising a central exchange equipment (CE) connected to a service provider network and a user equipment (UE) connected to a user workstation, wherein said CE and said UE are interconnected by a PSTN link, said CE including an ADSL transceiver and a splitter coupled between said CE transceiver and said PSTN link, said CE splitter including a low-pass filter for separating low frequency voice signals from high frequency ADSL signals transmitted from said UE over said PSTN link, said method comprising: generating an invert request message encoded as a tone sequence within said UE and transmitted to said CE over said PSTN link; receiving the tone-encoded invert request through the CE splitter low-pass filter; and decoding the received tone-encoded invert request utilizing a tone decoder communicatively coupled between the CE splitter low-pass filter and said CE transceiver.