Patent ID: 8320555

Claim:
A method for determining a change in network-generated crosstalk levels caused by a multi-line phone comprising: determining, using a signal analyzer, a first crosstalk level between a first line pair and a second line pair of a multi-line phone caused by the multi-line phone, wherein determining the first crosstalk level further comprises: measuring a third crosstalk level between the first line pair and the second line pair using a measurement circuit coupled to the first line pair and the second line pair; measuring a fourth crosstalk level between a first resistance device and a second resistance device using the measurement circuit, the measurement circuit being coupled to the first resistance device and the second resistance device; and subtracting, using the signal analyzer, the third crosstalk level from the fourth crosstalk level to determine the first crosstalk level; determining, using the signal analyzer, a second crosstalk level between each of the first line pair and the second line pair of the multi-line phone, the second crosstalk level being determined when the first line pair and the second line pair are coupled to a first predetermined length of network line pair cable; and determining, using the signal analyzer, a change of network generated crosstalk levels caused by the multi-line phone by comparing the first crosstalk level to the second crosstalk level.