| 摘要 |
<p>A method to identify impairments in telecommunication lines i, j , k, ... of a binder is described. The method comprises a global step of performing Single-Ended Line Testing SELT on the lines of the bundle. Furthermore the method comprises the steps of
- applying an input signal in a first mode out of a multi-mode group comprising at least one differential mode for a respective line of the bundle and comprising at least one phantom mode for a respective pair of lines of the bundle; and
- measuring an echo signal E in a second mode out of the multi-mode group, the second mode being different of the first mode; and
- analyzing the echo signal in view of the input signal for deriving therefrom the searched impairments. ( Figure 3 ).</p> |
