Patent ID: 6757276
Filing Date: 2004-06-29
Classification: H04M

Abstract:
A method for processing a touch tone subject to noise or distortion either during generation of said touch tone or during transmission of said touch tone along a transmission medium, comprising the steps of:(a) receiving said tone from said transmission medium; (b) detecting said tone; (c) determining whether the signal to noise ratio of said tone is below a predetermined threshold; (d) if said signal to noise ratio of said tone is below said predetermined threshold, responsively replacing said tone with a substantially noiseless and distortion-free digital signal corresponding to said tone; (e) performing compression and encoding of said substantially distortion free digital signal corresponding to said tone; and (f) transmitting said compressed and encoded signal onto a data network for receipt by a device on said data network or an ultimate recipient of said tones; whereby said device on said network or said ultimate recipient receiving said compressed and encoded signal may reliably detect said signal and convert said signal into said touch tone.