Hello
My name is Vadim
I am the system administrator for VoIp expert (IP telephony)
I understand you correctly you need to install your server asterisk Medooze app_rtsp video stream (ie, in fact when you call all the flow will be wrapped in an rtsp) and at the output you get RTSP video stream.
Tell please where your server is installed asterisk (VPS, VDS), or it is locally raised and on which server is running?
What is your version of Asterisk?
If you agree with what I have described, we can discuss the time for which your Projects will be executed.
Sincerely, Vadim.