[SR-Users] [Freeswitch-users] Fwd: Call drops after 32 seconds with ACK Timeout

[Karsten Horsmann]

Hi Mykyta,

since you are plain sip without encryption you can see your sip-traffic on
the wire,
use sngrep on the kamailio box to figure out whats with the sip-dialogs -
it helps a lot.
https://github.com/irontec/sngrep
and if its more an kamailio config problem, it would be better to stay at
sr-users at .

Or you can setup an webhomer for debugging.

Kind Regards


2017-09-01 17:49 GMT+02:00 Sean Ingham <sean at missionlabs.co.uk>:

> Once a call is answered FreeSWITCH sends a 200 OK SIP message to your
> Kamailio loadbalancer. As per the SIP spec your kamailio box should respond
> to a 200 OK with an ACK. The FS logs show that it never receives an ACK,
> and it repeatedly tries sending the 200 OK with no response. After 30
> seconds without an ACK FS will assume the call has failed and hangup.
>
> Looking at your Kamailio SIP logs you can see the 200 OKs getting through
> okay, and no attempt to send an ACK back to FS. I think this indicates an
> issue with your kamailio.cfg rather than FreeSWITCH.
>
>
> Sean
> www.wirex-precision.co.uk
>
> On Fri, Sep 1, 2017 at 3:40 PM, Микита Нікітенко <
> nikitanikitenko at gmail.com> wrote:
>
>>
>> Hello! I have server at digital ocean with a floating ip address and I
>> have routed sip traffic to this floating ip. At this server installed
>> kamailio which balancing between freeswitch servers. I have a problem that
>> call drops after 32 seconds with error ACK Timeout. Traffic comming throug
>> the kamailio proxy.
>>
>> kamailio.cfg - https://pastebin.com/x0CL3TEZ
>> kamailio sip messages log - https://pastebin.com/wyT3cBbD
>> freeswitch logs with sip debug - https://pastebin.com/zPysfQkV
>>
>> I'm struggling for a week and have no idea how to fix it.
>> Thank you very much.
>> Mykyta Nikitenko
>>
>>
>>
>>


-- 
Mit freundlichen Grüßen
*Karsten Horsmann*
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