Second, try the same strategy by going to the Connection tab of your modem's properties screen and clicking the Port Settings button. Two bars control the data flow through your serial port. Slide the bars back one notch at a time, and try reconnecting after each adjustment. Another cause of disconnections is line noise. Noise can confuse your modem into thinking it should hang up.
Some modems are more susceptible to noise than others.
There is nothing your ISP can do to fix this problem. It is recommended that you only contact your phone company about this type of problem. However this should only be done when the problem is serious. It is recommended that you wait until this count exceeds fifteen before contacting them. This practice will minimize flooding your phone company, Webmasters, system administrators, and ISPs with calls about intermittent problems.