Compact Framework 2.0 making Call using Calling card

The WM5.0 phone I have has bugs. Let me say I want to make call using calling card. These are all the steps.
1. Call 1-800 number of the calling card using speed dial.
2. Now enter 10 Digit Pin.
3. Enetr 10 digit destination number.

After step 1, when I use speed dial or dial from contact for step 2 or 3, it makes as new phone call rather than giving response for step 1. I want to develop my own phone application to make such calls. What should I do in Compact Framework 2.0 VS2005 WM5.0 to continue all the 3 steps as one instead of making new calls at step 2 & 3

Thanks,
Vijay