Im trying to send pkts from winXP SP3 and I can see error: 13:30:09.011 pjsua_core.c PJSUA state changed: INIT --> STARTING 13:30:09.011 pjsua_media.c ..NAT type detection failed: Invalid STUN server or server not configured (PJNATH_ESTUNINSERVER) 13:30:09.011 sip_endpoint.c .Module "mod-unsolicited-mwi" registered 13:30:09.011 pjsua_core.c .PJSUA state changed: STARTING --> RUNNING 13:30:09.011 pjsua_call.c Making call with acc #1 to sip:184.1.1.2 13:30:09.011 pjsua_media.c .Set sound device: capture=-1, playback=-2 13:30:09.011 pjsua_media.c ..Error retrieving default audio device parameters: Unable to find default audio device (PJMEDIA_EAUD_NODEFDEV) [status=420006] >>>> Does anyone can help here?