How to make tapirequestmakecall to work.
Use it like this:
Declare Function tapiRequestMakeCall Lib "TAPI32.DLL"
(ByVal lpszDestAddress As A String,
ByVal lpszAppName As String,
ByVal lpszCalledParty As String,
ByVal AlpszComment As String) As Long
visit MrCrimson's website, he has a tapi helpfile there. Hope you find this useful.
I have used the help file from Mr. Crimsons site and it is helpful. You could also use lineMakeCall once you have obtained ownership to a line device.