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 <[email protected]> *On Behalf Of
*Bogdan-Andrei Iancu
*Sent:* Δευτέρα, 24 Νοεμβρίου 2025 09:31
*To:* [email protected]; OpenSIPS users mailling list
<[email protected]>; Giovanni Maruzzelli <[email protected]>
*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
<[email protected]> 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
<[email protected]>:
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 <[email protected]> *Im Auftrag
von *Johan De Clercq
*Gesendet:* Donnerstag, 13. November 2025 16:29
*An:* [email protected]; OpenSIPS users mailling list
<[email protected]>
*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
<[email protected]>:
Antonio, you may want to update this feature request
from Johan:
https://github.com/OpenSIPS/opensips/issues/2076
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