27 Apr
2018
27 Apr
'18
5:39 p.m.
Hi,
likely, the best solution is here to use RTPEngine, so the IP/Port
stays identical for each request... i've tested it with various VoLTE
phones and various PCRF's.
Thanks,
Carsten
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2018-04-26 15:59 GMT+02:00 Alfonso Pinto <alfonso.pinto(a)gmail.com>om>:
Hi Alex,
Thanks for your answer. I was thinking more or less the same, but it seems I
oversimplified the example and was missing an important point.
This is IMS, so in the middle there are a lot more in the middle. It seems
that this behaviour is normal when precondition is set and the only way to
avoid the network to release the call on A side is to send the update.
I've seen that in Kamailio 5 a new function was included in TM:
https://www.kamailio.org/docs/modules/5.1.x/modules/tm.html#tm.f.t_uac_send
In the code it looks like it's trying to use the current dialog, but that
gives me doubts about CSEQ handling on the other side.
Anyway, I will try unless someone is faster replying saying it doesn't work
:)
Thanks,
Alfonso.
On Thu, Apr 26, 2018 at 2:37 PM, Alex Balashov <abalashov(a)evaristesys.com>
wrote:
I would instead redirect my focus to why A is dropping the call in this
situation. It shouldn't be doing that.
Per the standards, the first SDP answer must be the final SDP answer
(absent an update or reinvite) *of that endpoint*. There's no rule saying
that must be true of the dialog as a whole.
-- Alex
--
Sent via mobile, please forgive typos and brevity.
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