Hi there,
 um ... are we talking about SIP here?
2xx are invite successful final responses; 3xx are transfer final responses whilst 4xx, 5xx are final errors. 1xx are temporary responses.
Thus a 1xx followed by a 4xx (or 5xx) is not a success.
Or have I missed something in RFC2543 or 3761?

all the best,
  Lawrence

On 20 Aug 2015, at 13:30, Ítalo Rossi <italorossib@gmail.com> wrote:

> Correct, expected. A call is considered successful when you receive media, 183 or 200. If you need to change this behavior you'll need to set ignore_early_media=true before bridging.
>
> If you can't ignore_early_media, you need to set hangup_after_bridge=false and do more verifications on what happened after your last bridge.
>
> On Thu, Aug 20, 2015 at 8:37 AM, Avi Marcus <avi@avimarcus.net> wrote:
> I have several carriers, and I use:
> <action application="set" data="continue_on_fail=true"/>
> ... so I was a little surprised to see that a call that ended with NORMAL_TEMPORARY_FAILURE didn't route advance.
> I dug into the PCAPs of this and comparable, and the only difference I noticed was that the ones that worked were invite -> 100 and then 503 NORMAL_TEMPORARY_FAILURE and the one that didn't work was invite -> 100, 183, and then 503.
>
> I have a lua script that told me:
>
> session:getVariable("originate_disposition")  = SUCCESS
> session:getVariable("bridge_hangup_cause")  = NORMAL_TEMPORARY_FAILURE
>
> so... I'm guessing that a 183 marks the originate as a success which is why continue_on_fail didn't work, since it wasn't a fail.
>
> Is this expected? Is the carrier "doing something wrong" here?
>
> They did helpfully send: "SIP/2.0 503 Service Unavailable - Route Advance"
> More importantly: how can I fix it?
>
> Thanks,
>
> -Avi Marcus
> BestFone
>
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> --
> Ítalo Rossi
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