Microsip Api Documentation -

[DllImport("user32.dll", CharSet = CharSet.Auto)] public static extern int SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, ref COPYDATASTRUCT lParam);

is a lightweight, open-source Windows SIP softphone renowned for its minimal resource usage (under 5MB of RAM) and exceptional audio quality. However, its true hidden power lies not in its GUI, but in its Command Line Interface (CLI) and Windows Messaging API .

win32gui.SendMessage(hwnd, win32con.WM_COPYDATA, 0, ctypes.addressof(cds)) return True MicroSIP can also send notifications to your application. When an incoming call arrives, a call is connected, or status changes, MicroSIP can execute an external program or send a window message. 4.1 Configuring MicroSIP.ini for Callbacks Edit the MicroSIP.ini file in %APPDATA%\MicroSIP\ : microsip api documentation

cmd = f"callto:number\0".encode('utf-8')

Whether you are building a click-to-dial system, an automated IVR tester, or a home assistant voice notification service, the tools are already there—lightweight, free, and documented right here. [DllImport("user32

This article serves as the definitive resource for MicroSIP API documentation, covering every parameter, message type, and practical integration example. Before diving into syntax, it is critical to understand how the MicroSIP API works.

public IntPtr dwData; public int cbData; public IntPtr lpData; When an incoming call arrives, a call is

SendMessage(hWnd, WM_COPYDATA, IntPtr.Zero, ref cds); Marshal.FreeHGlobal(cds.lpData);