Q:
When my laptop dial ADSL to the Internet normally, the connection is always desultory, even cannot get IP address. What’s the problem?
A:
1) ADSL has two connect ways: special line and virtual dial-up. And most users adopt the latter method. Virtual dial-up is not only convenient for the telecommunication bureau to calculate the cost by hour, but also to save limited IP address resource, namely, only when user dials, he could get an IP address. When disconnect, it will be released automatically. Whereas, the IP quantity in IP address pool is limited after all, when there are quite a lot of temporary users, IP address will be distributed all. When later users dial again, they cannot get IP address, until other users are offline and release IP address. Therefore, during the summit time of Internet accessing, the issue that IP address could not get will stand out more obviously. If you are sure about this cause, then there’s no need to restart the computer, you'd just to redial again later, then you can get an IP address, which means that if later you can get IP address, the failure cause would be naturally from the telecommunication supplier side.
Besides, once jumper crystal head gets loosen, it will also cause the connection desultory from time to time. Therefore, if you can eliminate the reason from telecommunication supplier side, then you should check up the items below:
* Check whether the network cable has something wrong, especially RJ-45 head, whether it’s connected well with the network card.
* Whether ADSL