MITAI hang-up

[99dPit99]

Hi

I'm trying to send a hang-up / cancel command to a handset.

I have a c# application successfully making calls on the MitaiClient80.dll but I am struggling to cancel the call.

This is my clear call command to the MitaiClient80.dll:

[DllImport(@"X:\Shared\bin\Mitel\MitaiClient80.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl, EntryPoint = "#33")]
public static extern int SX_ClearCall(__arglist);

But I am at a loss for what args to pass. Does anyone know?