Documentation - Microsip Api

Technical Analysis of the MicroSIP Application Programming Interface (API) Documentation

Author: AI Technical Research
Date: April 12, 2026
Version: Based on MicroSIP 3.21.3

• Incoming calls (Incoming call from...)
• Call established (Call connected)
• Call ended (Call ended)

Command IDs (Decimal): These IDs correspond to menu items and buttons within the app. You send the WM_COMMAND message to the main window handle. microsip api documentation

| Action | Command ID (Approximate) | | :--- | :--- | | Answer Call | 40001 | | Hangup / Reject | 40002 | | Redial | 40003 | Incoming calls ( Incoming call from

There once was a junior dev named Leo who was tasked with automating a call center’s outbound dialer. He chose MicroSIP because it was lightweight and open-source. Command IDs (Decimal): These IDs correspond to menu

SIP-level integration Rather than integrating with MicroSIP directly, many developers integrate at the SIP protocol level: programmatically registering and placing calls using a SIP stack or library (PJSIP, Sofia-SIP, reSIProcate, Linphone SDK). This approach treats MicroSIP as just another SIP endpoint and focuses on server-side or client-side SIP control. For example, a web or server application can instruct a SIP PBX to originate a call to the MicroSIP endpoint using server-side APIs (AMI for Asterisk, ARI, FreeSWITCH event interface, etc.) or send SIP messages directly.

class MicroSipAPI

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