girish_kumar wrote: > Wireshark on A?s machine is not showing any RTP > packets while Wireshark on C?s machine is showing RTP sent out to > correct IP and port of A?s machine. This clearly indicates that it is not a problem with pjsip and your application, but it must be a network problem. Is there a firewall between A and C or locally (iptables ...)at A or C? > Is it fine as per RTP spec > to send to one IP:UDP port and receive from other? Yes. regards klaus