I've managed to set up a SIP call using the JAIN-SIP API for Java.

Now I would like to stream some video once a dialog has been established. I've read that this is possible with SDP and RTP, and I've found multiple examples on how to define a SDP/RTP body in a SIP packet.

But once you have negotiated capability etc. on nodes, **how do you actually start the RTP stream?** Do you start an RTP streaming server outside or inside your Java application? If so, how? What is the link?

In what I'm able to find online, nodes just "start exchanging RTP packets".

Thank you.