Enhance the Modem Timeout

If your modem it is timing out during file transfers or loading Web Pages, you might try increasing the timeout period. So that your work is not hampered. So to change the Time Out just follow the procedure. One thing more before doing that please back up your registry. So here is it ::
1.Open Regedit

2.Go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\ Services\ Class\ Modem\ XXXX\ Settings Where XXXX is the number of your modem.

3. In the right panel and double click on Inactivity Timeout

4.The number of minutes for a timeout should be entered between the brackets.

5.For example, a setting could have S19=<10> to set it to 10 minutes.