Hello Team, Hope you are doing well, I am finding some issue when I try to make a call using pjsua_call_make_call I am getting following log on console. *10:20:24.104 pjsua_call.c !Making call with acc #0 to sip:+919580XXXXX@85.XX.XXX.XXX:XXXX* *10:20:24.104 pjsua_aud.c .Set sound device: capture=-1, playback=-2* *10:20:24.105 pjsua_aud.c ..Opening sound device (speaker + mic) PCM@16000/1/20ms* *10:20:24.105 coreaudio_dev. ...Using VoiceProcessingIO audio unit* *10:20:24.505 coreaudio_dev. ...core audio stream started* *10:20:24.508 dlg0x1580000a8 .UAC dialog created* *10:20:24.508 dlg0x1580000a8 ..Session count inc to 2 by mod-pjsua.* *10:20:24.508 pjsua_call.c .Error initializing media channel: Object is busy (PJ_EBUSY) [status=70011]* *10:20:24.508 dlg0x1580000a8 ..Session count dec to 1 by mod-pjsua* *10:20:24.508 dlg0x1580000a8 .Dialog destroyed* *10:20:24.508 pjsua_media.c .Call 0: deinitializing media..* *Assertion failed: (entry->cb != ((void*)0)), function schedule_w_grp_lock, file ../src/pj/timer.c, line 501.* Any ideas? Any helps is greatly appreciated, I'm looking at this for 2 days now. Best Regards, Chandan Prajapati