Since MicroSIP is open-source, advanced developers can modify the source code directly to add custom API hooks or events. Source Access MicroSIP source code is available under the GPL v2 license. PJSIP Stack : It relies on the PJSIP library
This article serves as the for MicroSIP API documentation. You will learn the syntax, real-world examples, and integration patterns.
This document provides complete documentation for developers looking to programmatically integrate, automate, and control MicroSIP. 1. Outbound API: Command-Line and URI Protocols
On Error Resume Next Set dde = CreateObject("DDEClient") dde.Application = "MicroSIP" dde.Topic = "control" MsgBox dde.Execute("[Status]") If Err.Number <> 0 Then MsgBox "MicroSIP not running or DDE failed." microsip api documentation
(expanded version for deep reference). Copy, share, and adapt as needed for your internal wiki or developer docs.
MicroSip is built to prevent multiple instances. Passing CLI arguments to a new process will seamlessly route the data to the already running instance.
MicroSIP accepts command-line arguments for basic control: You will learn the syntax, real-world examples, and
: Best for deep programmatic control, including answering calls, hanging up, and reading real-time status changes.
Best for simple tasks like initiating calls or hanging up from external scripts.
Always verify the installation path. MicroSip can be installed as a standard program in Program Files or deployed as a portable app in a custom directory. Outbound API: Command-Line and URI Protocols On Error
if you need a version of the software with specific hardcoded behaviors or branding. Direct Database Access : For advanced users, there is a community-driven Microsip-API on GitHub
// Example C/C++ code to send commands HWND hWnd = FindWindow(NULL, L"MicroSIP"); if (hWnd) // Make a call COPYDATASTRUCT cds; cds.dwData = 1; std::wstring number = L"sip:1234567890@domain.com"; cds.cbData = (number.length() + 1) * sizeof(wchar_t); cds.lpData = (PVOID)number.c_str(); SendMessage(hWnd, WM_COPYDATA, (WPARAM)hWnd, (LPARAM)&cds);
You can automate actions based on call status by modifying the microsip.ini file. These commands execute external scripts or programs and can pass the as a parameter. cmdCallStart Runs when a connection is established cmdCallEnd Runs when a call ends cmdIncomingCall Runs when a new call arrives cmdCallAnswer Runs when the user answers a call
Ensure "Single Instance" is enabled in MicroSip settings. If disabled, calling microsip.exe -dial:123 will spawn a brand new app window instead of passing the command to your running softphone.
Before diving into APIs, it is helpful to understand the software's internal structure. The application follows a modular architecture with a clear separation of concerns between the UI, core functionality, and the PJSIP library integration.