Hello, I'm not a Dial up expert but I've found a list of troubleshooters that looked handy
Keeps disconnecting from the Internet. How can I fix this?
There are a couple of situations in which your computer would disconnect you from the Internet. A virus can cause it to disconnect. Windows Firewall was not enabled. You may be getting disconnected because your Internet connection idle time had reached the limit. Your computer has a time-out setting. To check your "idle timeout" setting:
If using Windows Dial Up Networking:
Double click on "My Computer" Double Click "Dial-up Networking"
Right Click over your Internet connection
Single click properties
Click the "Configure" button
Click the Connection Tab.
You should now see a check box with "Disconnect a call if idle for XX minutes". Uncheck this box if it is checked.
You may be getting disconnected because you have Outlook Express set to disconnect after you have checked your e-mail (pressing the send and receive button). You can check to see if this is set by doing the following:
Open Outlook Express
Click tools at the top
Click options from the drop down menu
Click the connection tab from here make sure there is NO check in "hang up after sending and receiving".
Click OK to save the changes
If you didn't see the connection tab, then click the dialup tab, From here, make sure there is no check in "Hang up when finished sending and receiving or downloading"
Click Ok to save the changes