deeper into the muck

so it turns out that the process of "connect the call" is substantially more complicated than I had first imagined. However, I am slowly learning.

Thanks to a great collection of charts I think I understand the handshaking that normally works in connecting a call via SIP.

What I am trying to figure out is where along the line SIP-Communicator connects the actual RTP Stream, and how I can emulate that function in the mailbox service.