Hi, just wondering whether the following scenario (which it's not possible in kamailio 1.5) is possible in 3.X:
1) Alice calls a PSTN number.
2) Proxy receives the call and routes it to a media server which plays an early-announcement (30 seconds long).
3) After N seconds (maybe 10 seconds) proxy starts a new parallel branch to the PSTN gateway *without* cancelling the previous branch with the media server.
4) Let's suppose the PSTN phone rings and proxy gets 183 with SDP (ringing in real audio). Proxy converts such 183 into a 180 with no SDP (already possible in Kamailio).
5) After 30 seconds media server rejects the call with 480. PSTN branch remains ringing as usual.
I just would like to know if Kamailio 3.X allows point 3. I think it's hard but maybe I miss some feature.
Thanks a lot.