Microsip Api Documentation -

Output devices: 0: Speakers (Realtek) 1: Headphones (USB Audio) Input devices: 0: Microphone (Realtek) 1: Headset mic (USB) Then send: [SetDevice(output,1)] Method A: Windows PowerShell (Native, no extra tools) # Make a call $dde = New-Object -ComObject "DDEClient" $dde.Application = "MicroSIP" $dde.Topic = "control" $dde.Execute('[Dial(5551234)]') $dde = $null Or using a VBScript bridge (more reliable):

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

A: Not directly via DDE events. Instead, poll [Status] every 200ms or parse the --log CSV live. Output devices: 0: Speakers (Realtek) 1: Headphones (USB