Hi all, I'm trying to disable the audio device using the following method call: ep.audDevManager().setNullDev() and I'm getting the following result: python: ../src/pjsua-lib/pjsua_core.c:2559: pjsua_transport_get_info: Assertion `pjsua_var.tpdata[id].data.ptr != ((void *)0)' failed. and also using pjsua2 library. I'm doing this because whenever I make a call, I get this error: 18:02:06.381 pjsua_call.c Making call with acc #0 to sip:testing@sjomainfnsg51.fuzemeeting.com:5060 18:02:06.381 pjsua_aud.c .Set sound device: capture=-1, playback=-2 18:02:06.381 pjsua_aud.c ..Error retrieving default audio device parameters: Unable to find default audio device (PJMEDIA_EAUD_NODEFDEV) [status=420006] 18:02:06.381 call.cpp pjsua_call_make_call(acc.getId(), &pj_dst_uri, param.p_opt, this, param.p_msg_data, &id) error: Unable to find default audio device (PJMEDIA_EAUD_NODEFDEV) (status=420006) [../src/pjsua2/call.cpp:490] Traceback (most recent call last): File "testcall.py", line 109, in <module> my_call.makeCall("sip:testing@sjomainfnsg51.fuzemeeting.com:5060", prm) File "/home/achen/.local/lib/python2.7/site-packages/pjsua2.py", line 5135, in makeCall def makeCall(self, *args): return _pjsua2.Call_makeCall(self, *args) pjsua2.Error Any advise would be greatly appreciate it. -- Andy Chen Sr. Telephony Lead Engineer achen@ <achen@thinkingphones.com>fuze.com -- *Confidentiality Notice: The information contained in this e-mail and any attachments may be confidential. If you are not an intended recipient, you are hereby notified that any dissemination, distribution or copying of this e-mail is strictly prohibited. If you have received this e-mail in error, please notify the sender and permanently delete the e-mail and any attachments immediately. You should not retain, copy or use this e-mail or any attachment for any purpose, nor disclose all or any part of the contents to any other person. Thank you.*