| 摘要 |
<p>The method for accurately determining the location of a fault on a telephone line. The method includes the steps of obtaining a transfer function of the telephone line and performing a Fourier transform on the transfer function. Fourier transform includes a spike having a time component that is representative of a discontinuity, which is located a known discontinuity and the time component associated with the fault are then used to calculate the distance from the end of the telephone line to the fault. The time component and distance associated with the known discontinuity can also be used to calculate a propagation speed of the telephone line. The method may be implemented, in either a single-ended or double-ended manner, between various elements of a telecommunication network, such as a customer's modem (50), a public switch (52), a remote test unit (54), a digital subscriber line access module(56), and a remote access server (58).</p> |
