Patent ID: 6928107
Filing Date: 2005-08-09
Classification: H04L

Abstract:
1. A digital data communications system comprising: a. a first transceiver having an equalizer with a plurality of taps, said first transceiver configured to equalize voice-band analog signals in each of receive and transmit directions; b. a second transceiver; c. a local loop connecting said first transceiver to said second transceiver; and d. a feedback means for said second transceiver to calculate tap correction factors for said plurality of taps repeatedly during a transmission of digital data, and transfer said tap correction factors to said first transceiver; wherein said first transceiver performs substantially more processing than said second transceiver for equalizing said voice-band analog signals in each of receive and transmit directions; wherein said second transceiver generates said tap correction factors, squares each tap correction factor to generate a squared tap correction factor, adds said squared tap correction factor to generate a sum, and transfers said tap correction factors to said first transceiver if said sum exceeds a pre-determined threshold.