Hello, Can anyone give me a hint on what I am doing wrong? I am trying to make pjsua work with free sip proxy server -sip2sip with the following credentials : ./pjsua-i686-pc-linux-gnu --id sip:myusername at sip2sip.info --registrar sip:sip2sip.info:8060 --realm sip2sip.info --nameserver sip2sip.info --outbound sip:proxy.sipthor.net --username myusername --password mypassword<pjsip at lists.pjsip.org> i get the following result : _sip._udp.prox DNS SRV resolution failed for _sip._udp.proxy.sipthor.net: Operation timed out (PJ_ETIMEDOUT) _sip._udp.prox DNS SRV resolution failed for _sip._udp.proxy.sipthor.net, trying resolving A record for proxy.sipthor.net resolver.c Transmitting 35 bytes to NS 0 (81.23.228.140:53): DNS A query for proxy.sipthor.net resolver.c Re-transmitting 35 bytes to NS 0 (81.23.228.140:53): DNS A query for proxy.sipthor.net resolver.c Error transmitting request: No working DNS nameserver (PJLIB_UTIL_EDNSNOWORKINGNS) _sip._udp.prox DNS A record resolution failed: Operation timed out (PJ_ETIMEDOUT) sip_resolve.c DNS A record resolution failed: Operation timed out (PJ_ETIMEDOUT) tsx0x9ae755c Failed to send Request msg REGISTER/cseq=61307 (tdta0x9ae64f0)! err=70009 (Operation timed out (PJ_ETIMEDOUT)) pjsua_acc.c SIP registration failed, status=503 (Operation timed out (PJ_ETIMEDOUT)) pjsua_acc.c Scheduling re-registration retry for acc 2 in 63 seconds.. best regards, John -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20121103/228119a4/attachment-0001.html>