Sending voice (.wav) to a modem

I would like to send a .wav file to a phone using a modem. It's a request from a client to send an alarm by phone when his production line have a fault.

Any help is welcome.

with this api u can dial thru Windows Phone Dialer ...

Declare Function tapiRequestMakeCall Lib "tapi32" _
(ByVal lpszDestAddress As String, _
ByVal lpszAppName As String, _
ByVal lpszCalledParty As String, _
ByVal lpszComment As String) As Long

The TAPI SDK that can be downloaded from the Microsoft site