[OpenSIPS-Users] Request-Disposition: no-fork

[Bogdan-Andrei Iancu]

Hi Bela,

What you are trying to do (messing with the TO-tags) is a bad idea, as 
you will be breaking the upstream parallel forking.

If the GW does not support forking, what you can do is to avoid doing 
parallel forking in your cfg (like when routing to users via lookup). 
You do not need any special support.

Best regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
   https://www.opensips-solutions.com
OpenSIPS Summit 27-30 Sept 2022, Athens
   https://www.opensips.org/events/Summit-2022Athens/

On 9/29/22 7:10 AM, Bela H wrote:
>
> Hello,
>
> I have call forwarding busy/no answer scenario: A number is from a 
> gateway, B and C numbers are our own subs.
>
> The gateway is sending us the INVITE message with 
> “Request-Disposition: no-fork” header field.
>
> That means we must use one dialog for the mentioned scenario.
>
> Currently the To tag we are sending to the GW in the first 180 
> ringing/181 Call is being forwarded messages are different to the To 
> tag in the second 180 ringing and 200 OK (SDP).
>
> Gateway                  OpenSips
>
>               INVITE
>
> ------------------------------------------>
>
> 100 GIVING IT A TRY
>
> <-- -----------------------------------------
>
>       180 RINGING
>
> <- -------------------------------------------
>
> 181 CALL IS BEING FORWARDED
>
> <- -------------------------------------------
>
>       180 RINGING
>
> <- -------------------------------------------
>
>       200 OK (SDP)
>
> <- -------------------------------------------
>
> What would be the easiest way from OpenSIPS to send the same To tag 
> (it should be the same from the first 180 ringing through to the 200 
> OK) and using one dialog for this scenario?
>
> Cheers,
>
> Bela
>
>
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