Patent ID: 9313564
Filing Date: 2016-04-12
CPC Classification: H04Q

Claim Text:
1. Line interface unit (LIU) circuitry, comprising: first and second instantiations of the LIU circuitry, including: respective first and second transmit parts, including: respective first and second feedback controllers, each configured to: receive output waveforms, the output waveforms outputted to a telecommunications line by the LIU circuitry; receive an indication of a line impedance of the telecommunications line, the indication of the line impedance outputted from a device configured to measure the line impedance of the telecommunications line; and control feedback to modify the output waveforms to fit a mask of a communication protocol, according to the received output waveforms and the indication of the line impedance; and respective first and second gain controllers communicatively coupled to the first and second feedback controllers, respectively, each of the first and second gain controllers configured to perform the modification of the output waveforms according to the controlled feedback.