We need a lot more information. Internet Explorer has nothing to do
with TAPI or phone dialing, it would need an add on of some sort. What
is the application or page that has your TAPI phone dialer? What is
this phone dialer? Software you created? Someone else's dialer? How
What device is trying to do the dialing? Is it on your local machine?
Is is a voice modem or a better device?