[SR-Users] Problem implementing Outbound Proxy

[Christoph Russow]

hi karsten,

yeah thats what i thought but i'm a bit without a clue here how to 
achieve this. any hints?

Best regards
Christoph

Am 26.11.21 um 09:52 schrieb Karsten Horsmann:
> Hi Christoph,
> 
> 
> so you have an trusted connection "SIPTRUNK" to kamailio (and then 
> dispatcher to application/freeswitch B2BUA).
> I would create an now an vice-versa flow in your kamailio like this:
> FreeSWITCH (bridge/internal/kamailio-ip) to kamailio to SIPTRUNK.
> 
> 
> Kind regards
> Karsten
> 
> Am Fr., 26. Nov. 2021 um 09:01 Uhr schrieb Christoph Russow 
> <russow at emtex.de <mailto:russow at emtex.de>>:
> 
>     Hi all,
> 
>     can no one help here? do you need more informations?
> 
>     Best regards
>     Christoph
> 
>     Am 23.11.21 um 15:26 schrieb Christoph Russow:
>      > Hi all,
>      >
>      > im currently trying to add a Outbound Proxying to our system
>     which right
>      > now does inbound loadbalancing for our application servers.
>      >
>      > Current:
>      > Inbound SIP Trunk -> Kamailio -> dispatcher -> ApplicationServer 1..n
>      >
>      > i now want to add the ability for our internal Application
>     Servers to
>      > terminate their outbound calls through the kamailio system.
>      >
>      > currently i've setup a gateway in the (freeswitch) application
>     server
>      > that has the kamailio system set as outbound-proxy. this leads to
>     sip
>      > calls started with
>      >
>      > originate sofia/gateway/kamailio/<number>@<outbound carrier IP>
>      >
>      > to be sent to the kamailio system which then forwards it to the
>     given
>      > carrier IP. Sadly our main carrier answers with "503 service
>     unavailable
>      > - no bandwith available". (maybe due to the internal ip-addresses
>     within
>      > some of the headers?)
>      >
>      > i've attached our current kamailio configuration and also a pcap
>     of a
>      > call i tried to start with our main carrier.
>      >
>      > i tried this way as it seemed to be the easiest way so our
>     application
>      > servers still can select the outbound carrier within their flow.
>      >
>      > maybe i'm on the wrong way here and need to solve this problem in a
>      > completely different way i don't know.
>      >
>      > TLDR: sip proxying does not work as expected. need a way to achieve
>      > outbound calls routed through kamailio from internal application
>     servers
>      >
>      > any hint/help into the right direction is appreciated
>      >
>      > Best Regards
>      > Christoph Russow
>      >
>      >
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> 
>     -- 
>     ________________________________________________________________
> 
>     EMTEX GmbH
>     Christoph Russow
>     Software Engineer
> 
>     Bischof-Otto-Weg 9
>     D-91086 Aurachtal
>                                 Geschäftsführer:       Markus Enzinger
>     Tel. +49 9132 7490 0      Sitz der Gesellschaft: 91086 Aurachtal
>     Fax. +49 9132 7490 900    Amtsgericht Fürth:     HRB6804
>     ________________________________________________________________
> 
>     __________________________________________________________
>     Kamailio - Users Mailing List - Non Commercial Discussions
>        * sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.org>
>     Important: keep the mailing list in the recipients, do not reply
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> 
> 
> 
> -- 
> Mit freundlichen Grüßen
> *Karsten Horsmann*
> 
> __________________________________________________________
> Kamailio - Users Mailing List - Non Commercial Discussions
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> Important: keep the mailing list in the recipients, do not reply only to the sender!
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-- 
________________________________________________________________

EMTEX GmbH
Christoph Russow
Software Engineer

Bischof-Otto-Weg 9
D-91086 Aurachtal
                           Geschäftsführer:       Markus Enzinger
Tel. +49 9132 7490 0      Sitz der Gesellschaft: 91086 Aurachtal
Fax. +49 9132 7490 900    Amtsgericht Fürth:     HRB6804
________________________________________________________________