is set of “Bridged” way.
* Whether there’s something wrong with the network card and relevant driver.
* If there’s something wrong with Windows XP operation system.
2)  ADSL is a technology based on twisted-pair transmission. Twisted-pair is made of two insulated copper wires twisted with certain rule together. Then it could defend the external electromagnetic interference effectively. But on the market, most telephone wires are of parallel wire, which is quite bad for ADSL transmission. Too long non-twisted-pair transmission will make the connection quite unstable, DSL light keeps flashing or some other symptoms. Finally it affects the Internet quality. As ADSL adds high-frequency digital signal onto the low-frequency sound of common telephone wire, so during the connection from external telephone wire to ADSL filter, any device enter will jeopardize the normal data transmission, besides, before filter, don’t add telephone or install alarm and other devices.