30 May
2011
30 May
'11
1:14 p.m.
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(a)aliax.net>
31 May
31 May
10:51 a.m.
New subject: Late parallel branch (without canceling previous pending branches)
Hello,
On 5/30/11 1:14 PM, Iñaki Baz Castillo wrote:
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.
the best you have to code it in C, should not
be that hard:
- keep the transaction ID in some list
- after a while, based on a timer process, lookup transaction
- add a branch and forward it
Or, if possible, fake somehow a negative reply and inject it from the
network, then kamailio will trigger a failure route, the media server
will still play.
Or put another proxy before media server, use rtimer+mqueue to cancel a
transaction after a while with:
http://kamailio.org/docs/modules/stable/modules_k/tmx.html#id2784882
Inside intermediary proxy, drop the cancels. It might work at the end :-)
Cheers,
Daniel
--
Daniel-Constantin Mierla -- http://www.asipto.com
http://linkedin.com/in/miconda -- http://twitter.com/miconda
11:31 a.m.
New subject: Late parallel branch (without canceling previous pending branches)
2011/5/31 Daniel-Constantin Mierla <miconda(a)gmail.com>om>:
the best you have to code it in C, should not be that
hard:
- keep the transaction ID in some list
- after a while, based on a timer process, lookup transaction
- add a branch and forward it
Or, if possible, fake somehow a negative reply and inject it from the
network, then kamailio will trigger a failure route, the media server will
still play.
Or put another proxy before media server, use rtimer+mqueue to cancel a
transaction after a while with:
http://kamailio.org/docs/modules/stable/modules_k/tmx.html#id2784882
Inside intermediary proxy, drop the cancels. It might work at the end :-)
Thanks a lot Daniel. Finally it seems that the late branch would
always arrive to a PSTN gateway under our control, so calling like a
"Sleep(10)" function in the gw before it relays the call to the
carriers would do the job in an easily way.
I hope this is finally the case. If not, let's code C :)
Cheers.
--
Iñaki Baz Castillo
<ibc(a)aliax.net>
4722
days inactive
4723
days old
2 comments
2 participants
participants (2)
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Daniel-Constantin Mierla -
Iñaki Baz Castillo