> Auth Realm: sip:192.168.1.167:5060 (Asterisk IP URL) use * for realm ( * means pjsua will works with any realm that send by sip server ) or for command line --registrar=sip:192.168.1.167:5060 --id=sip:192.168.1.166:5060 --realm=* --username=9253 --password=1000 ............... atik