Configure redial options

Open Network Connections.
Right-click the dial-up connection you want to configure, and then click Properties.
On the Options tab, in Redialing options, click the arrows to set the number of times the dial-up connection is automatically redialed if the first attempt to connect fails.
In Time between redial attempts, click the down arrow to set the amount of time to pause between the end of one attempt and the beginning of another.
In Idle time before hanging up, click the down arrow to set the amount of idle time before a client hangs up a connection.
If you want the connection to automatically redial if the line is dropped, select the Redial if line is dropped check box.

Notes

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The Time between redial attempts pause lets the device reset itself before redialing. The default is one minute. If that is not enough time, increase this setting. You can also experiment with shorter times, but if you make the pause too short, the device does not have time to reset itself.
Keep in mind that the remote access server also has a disconnect timer. If Idle time before hanging up is set to a high time-out number, there is no guarantee that the connection will not disconnect before the time passes. This is because the server may choose to disconnect you before the time set here.
If you are using Internet Explorer, the browser's own settings for dial-up connections may conflict with these redial options.