Hi all, I am able to compile and execute simple_pjsua.c program. I am running simple_pjsua.c program on one machine so that it can act as a receiver to receive a call made from another machine with the same program. I am running a program on the receiver like this ./simple_pjsua I am running a program like this on sender ./simple_pjsua sip:192.168.0.103 (address of other machine) Then I am getting a warning message like this sip_endpoint.c .Request msg REGISTER/cseq=5459 (rdata0x94cc854) from 192.168.0.103:5060 was dropped/unhandled by any modules and also I am not getting any sound at the other side. Could you please tell me the process of making a call and transfer it to other side using pjsip? Thanks pirpi -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20141124/00dab03b/attachment.html>