MicroSIP.exe sip:user@domain.com
MicroSIP itself is a lightweight open-source SIP softphone. Its "API" is primarily exposed via and Windows messages (WM_COPYDATA) , allowing external apps to control it. microsip api documentation
If basic CLI commands aren't enough, consider these more technical paths: MicroSIP
: There are community-developed libraries, such as the microsip-api on PyPI, which may offer extended control via Python. FreeSWITCH event interface
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.