Re: Kamailio + Dispatcher + UAC

can you share your relay, on_reply and on_failure routes, please?

Atenciosamente / Kind Regards / Cordialement / Un saludo,


*Sérgio Charrua*

*www.kahea.ai <http://www.kahea.ai> / www.voip.pt <http://www.voip.pt>*

*OpenTelecom* - Consulting for Telecoms, Lda
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On Wed, Jan 28, 2026 at 3:28 PM Mark Boyce via sr-users <
[email protected]> wrote:

> Hi Darren
>
> Might be worth checking the actual packet trace on the kamailio server.  I
> am seeing the carrier respond, kamailio catches the AUTH challenge and
> responds, but then kamailio doesn’t relay any of the further messages to
> the original caller.   From the Asterisk/Freeswitch/Handset side … it looks
> like it does an INVITE then silence. Example trace attached.
>
> [image: SIP Trace Asterisk to Kamailio Invite.jpg]
>
> Mark
>
> On 28 Jan 2026, at 13:43, Darren Carter via sr-users <
> [email protected]> wrote:
>
> Hi Mark,
>
> Sounds like you and I are in the same boat. I’ve been at this for a few
> days now and the issue remains the same, as soon as I add the UAC auth to
> the invite my carrier stops responding and then Kamailio just retransmits
> until it times out.
>
> My opinion is that the carrier does not like the record route and other
> headers added by Kamailio in order to do its job and they simply drop the
> request.
>
> I have decided to leave carrier connectivity to the PBX and I dropped
> Asterisk for FreeSWITCH as it performs way better than Asterisk in terms of
> call concurrency.
>
> Kind regards
>
> Darren Carter
>
> --
> Mark Boyce
> [email protected]
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