[OpenSIPS-Users] 100rel / PRACK Interworking

[Bogdan-Andrei Iancu]

OK, Giovanni, would you take the role of starting a new thread (was your 
idea :D) here and filling in all the PRACK related requirements that you 
have in mind at this step - and we can use that as starting point for 
the discussion.

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
   https://www.opensips-solutions.com
   https://www.siphub.com

On 24.11.2025 09:56, Antonios Psaras wrote:
>
> Hello Bogdan.
>
> Whatever fits you better.
>
> *Antonis*
>
> *From:* Users <users-bounces at lists.opensips.org> *On Behalf Of 
> *Bogdan-Andrei Iancu
> *Sent:* Δευτέρα, 24 Νοεμβρίου 2025 09:31
> *To:* gmaruzz at opentelecom.it; OpenSIPS users mailling list 
> <users at lists.opensips.org>; Giovanni Maruzzelli <gmaruzz at gmail.com>
> *Subject:* Re: [OpenSIPS-Users] 100rel / PRACK Interworking
>
> Hi Giovanni, Johan, Antonios,
>
> Talking about the PRACK, yes, it sounds like a good idea to get such 
> support in the dialog module. And yes, we need to start with drafting 
> the functionality to be provided - should we do this over the #2076 
> github ticket (mentioned by Giovanni) or open new thread here, 
> backed-up by a GH wiki page to aggregate the requirements ?
>
> Best regards,
>
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developer
>    https://www.opensips-solutions.com
>    https://www.siphub.com
>
> On 14.11.2025 11:30, Giovanni Maruzzelli wrote:
>
>     > It really is a mess, to me it seems that IMS guys are scared of rtp
>
>     +1 it is an endpoint thing, trunk providers are wrong to ask for
>     it (what do they get from it?)
>
>     when you (trunk provider) know that the phone is actually ringing,
>     what do you gain? It has meaning when you control the whole chain,
>     end-to-end (carriers, IMS) not at all for
>     deskphone->itsp->trunk->whatever->carrier->endphone
>
>     But I know they (trunk providers) start to *REQUIRE* PRACK
>
>     So, probably a module, or an extension of an existing module, can
>     be warranted and welcome
>
>     Possibly on 3.6.X (that's the last LTS of the 3.0.0 series)
>
>     Let's open a thread on what functionalities can be useful in it?
>
>     -giovanni
>
>     On Fri, Nov 14, 2025 at 10:21 AM Johan De Clercq
>     <Johan at democon.be> wrote:
>
>         +1.  I totally agree with you.
>
>         It really is a mess, to me it seems that IMS guys are scared
>         of rtp.
>
>         Op vr 14 nov 2025 om 10:03 schreef Walter Schober
>         <walter.schober at neotel.at>:
>
>             Hi!
>
>             I also want to point out that its not done with PRACK
>             handling alone. Followup (multiple) UPDATE with codec
>             changes must be handled, too. Sometimes that lead into
>             AMR(WB)/PCMA/G722/OPUS transcoding in early state.
>             Including all the DTMF PT issues.
>
>             It is definitely a endpoint / softswitch feature.
>
>             I know those ignorant IMS guys pushing out their internal
>             mess to plain RFC3261 interconnects and forcing tasks
>             previously done by an MSC to the rest of the world.
>
>             Br
>
>             Walter
>
>             *Von:*Users <users-bounces at lists.opensips.org> *Im Auftrag
>             von *Johan De Clercq
>             *Gesendet:* Donnerstag, 13. November 2025 16:29
>             *An:* gmaruzz at opentelecom.it; OpenSIPS users mailling list
>             <users at lists.opensips.org>
>             *Betreff:* Re: [OpenSIPS-Users] 100rel / PRACK Interworking
>
>             Giovanni on a side note, what to do with update ? do you
>             handle it locally or do you forward it to your endpoint ?
>
>             BR, Johan.
>
>             Op do 13 nov 2025 om 15:54 schreef Giovanni Maruzzelli
>             <gmaruzz at gmail.com>:
>
>                 Antonio, you may want to update this feature request
>                 from Johan:
>                 https://github.com/OpenSIPS/opensips/issues/2076
>
>
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