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

[Mykyta Nikitenko]

Thanks everybody for help! The problem was in wrong listen address in 
kamailio.cfg. Alex Balashov, thanks a million for help!


On 01.09.2017 20:04, Karsten Horsmann wrote:
> 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 
> <mailto: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 <http://www.wirex-precision.co.uk>
>
>     On Fri, Sep 1, 2017 at 3:40 PM, Микита Нікітенко
>     <nikitanikitenko at gmail.com <mailto: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
>         <https://pastebin.com/x0CL3TEZ>
>         kamailio sip messages log - https://pastebin.com/wyT3cBbD
>         <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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