Hello As you can see from log, pjsua can't find audio device..if you sound device is not present set null sound device or set right ID for sound device. > Dear Sir, > > How can i fix it? > > Code: > ===== > pj_str_t uri = pj_str(argv[1]); > status = pjsua_call_make_call(acc_id, &uri, 0, NULL, NULL, NULL); > if (status != PJ_SUCCESS) error_exit("Error making call", status); > > When i make a call > ================== > [sun at example mysip]$ ./myapp sip:5000 at ipaddress > > I get error: > ========== > --end msg-- > 22:49:44.192 pjsua_acc.c Registration sent > 22:49:44.192 pjsua_media.c Error retrieving default audio device > parameters: Unable to find default audio device (PJMEDIA_EAUD_NODEFDEV) > [status=420006] > 22:49:44.192 APP Error making call: Unable to find default > audio device (PJMEDIA_EAUD_NODEFDEV) [status=420006] > 22:49:44.202 pjsua_core.c Shutting down... > 22:49:44.202 pjsua_pres.c Shutting down presence.. > 22:49:44.202 pjsua_media.c Shutting down media.. > 22:49:44.667 pa_dev.c PortAudio sound library shutting down.. > 22:49:44.667 sip_reg.c Unable to send request, regc has another > transaction pending > 22:49:44.667 pjsua_acc.c Unable to create/send REGISTER: Object is > busy (PJSIP_EBUSY) [status=171001] > > > Thank you > Regards