Hi! we are also trying to develop the same kind of application using Jain SIP and JMF. We are able to stream it with in LAN. Same problem we are getting when we chat in Internet with this application, even we are using public ip. What might be the problem. If we use public IP means, there shouldn't be any NAT problem. Please, help me out in this issue. How to overcome it. We are able to establish SIP session and RTP session. The only thing is we are not able to stream it. How to use SDP content (especially ports)?

Thanks in advance