Purchased used intel modem, ambient md3200 based
. Downloaded driver from DriverGuide.com. XP identifies as Intel 537 and says all is fine. However, only way I've been able to connect is by disabling hardware flow control. With Hardware flow control enabled modem begins handshake process then hangs on a strange tone. Seems like I remember running across this some years back, but I can't remember the fix. Any takers? Thanks.