| 摘要 |
The present invention relates to an impedance matcher for matching the impedance of a high bit rate transmission channel of a copper-wired terminal installation comprising a high bit rate x-DSL modem (M) and a jack (P; P 1; P 2, P 3 ), which automatically matches the impedance of the high bit rate transmission channel according to whether a modem is plugged into the jack of the installation or not. The impedance matcher comprises an adjustment module ( 10 ) adapted to insert a terminating impedance into the jack (P; P 1, P 2, P 3 ) when it is not connected to said high bit rate modem (M), and a coupling module ( 20 ) adapted to be combined with said adjustment module ( 10 ) when said high bit rate modem (M) is connected to said jack (P; P 1, P 2, P 3 ) to transform the impedance inserted into said jack to make it transparent to high bit rate transmission of broadband services.
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