[SR-Users] Late parallel branch (without canceling previous pending branches)

[Iñaki Baz Castillo]

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.

-- 
Iñaki Baz Castillo
<ibc at aliax.net>