Patent ID: 8270287

Claim:
A system for simulating a far end crosstalk environment comprising: a first line coupled at a first end to a multiplexer and coupled at a second end to a first loop simulator; a plurality of second lines, each of the plurality of second lines coupled at one end to the multiplexer; at least one filter disposed in one of the plurality of second lines and configured to receive an input signal and output a filtered signal, the at least one filter being configured to simulate far end crosstalk, the at least one filter being based on variable lengths of the plurality of second lines; a scaling block coupled to the at least one filter; and an output path for the first line coupled to an output for each of the first loop simulator and the scaling block, the output path configured to output an output signal to a customer premises equipment; wherein a filter is disposed in each of the plurality of second lines and is configured to receive input signals and output filtered signals and the system further comprises: a linear adder configured to combine the filtered signals and output a crosstalk signal, the scaling block is configured to scale the crosstalk signal and output a scaled crosstalk signal, the first loop simulator is configured to attenuate a signal on the first line to create an attenuated signal, the output path for the first line is configured to combine the attenuated signal with the scaled crosstalk signal and output a first line output signal.