Definition of event delegate you should use if you want to receive the OnPhoneStateChanged event.
[Visual Basic]
Public Delegate Sub OnPhoneStateChanged( _
ByVal Sender As Object, _
Byval e As OnPhoneStateChangedArgs_
)
[C#]
public delegate void OnPhoneStateChanged(
object Sender,
OnPhoneStateChangedArgs e
);
Namespace: TAPIEx
Assembly: TAPIEx.Net.Dll