Re: Kamailio + Dispatcher + UAC

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.



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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