Keyspan replied that, if you create a new Modem control panel configuration, with "Internal Modem" selected as the port in the "Connect via" popup menu, this might work-around the problem.

A correct version of the directions follows: Double-click on My Computer, then on Control Panel. Double-click on the Modem icon, then select your modem by clicking on it. Click on the Properties ...

However, you can make it quieter so you and your office colleagues are not irritated. To do that, go to Start and then click on Control Panel and the modem icon. Now click on the Properties button and ...