Introduction In the world of Voice over IP (VoIP), efficiency and footprint matter. While heavyweight softphones like Zoiper or X-Lite offer graphical bells and whistles, they often consume system resources and lack true automation capabilities. Enter MicroSIP —a free, open-source, lightweight SIP softphone for Windows that weighs under 300KB.

A: Not directly via DDE events. Instead, poll [Status] every 200ms or parse the --log CSV live.

A: Officially, very little. This article synthesizes years of community reverse-engineering. Use stable commands only.

MicroSIP.exe --listdevices Output: