Re: out of dialog requests

Maybe this can help, I used this in an project a few years ago, and it
worked fine.
Just replace value to some of the $vars, and you should be good to go:

# REFER to callee (keep original dialog identifiers)
$uac_req(method) = "REFER";

$uac_req(ruri)   = "sip:"+$var(to_uriU)+"@"+$var(SourceIP);
/* URIs WITHOUT tags */
$uac_req(furi)   = $var(from_uri);
$uac_req(turi)   = $var(to_uri);
/* Tags MUST be provided via ftag/ttag */
$uac_req(ftag)   = $var(fromTAG);
$uac_req(ttag)   = $var(toTAG);

$uac_req(callid) = $var(callid);
/* optional
$uac_req(cseq)   = $T_req(cseq) + 1;
*/

/* Any extra headers + empty body */
$uac_req(hdrs) =
    "Refer-To: " + $var(conf_uri2) + "\r\n" +
    "Referred-By: " + $var(to_uri) + "\r\n" +
    "Content-Length: 0\r\n";

uac_req_send();



Atenciosamente / Kind Regards / Cordialement / Un saludo,


*Sérgio Charrua*

*www.kahea.ai <http://www.kahea.ai> / www.voip.pt <http://www.voip.pt>*

*OpenTelecom* - Consulting for Telecoms, Lda
Tel.: +351  <callto:+351+91+104+12+66>91 631 11 44

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On Mon, Oct 13, 2025 at 5:13 PM Henning Westerholt via sr-users <
[email protected]> wrote:

> Hello Robert,
>
>
>
> yes, I’ve got a bit confused from your message, maybe I misunderstood it.
>
>
>
> You want to send an out of dialog message, but want to re-use the original
> Call-Id, From tag and To tag, which define the dialog. This will create an
> in-dialog SIP message.
>
>
>
> Cheers,
>
>
>
> Henning
>
>
>
> *From:* Robert Boardman <[email protected]>
> *Sent:* Montag, 13. Oktober 2025 16:42
> *To:* Henning Westerholt <[email protected]>; Kamailio (SER) - Users Mailing
> List <[email protected]>
> *Subject:* Re: out of dialog requests
>
>
>
> Hi,
>
> Yes, I have used this when the dtmf was coming via sip info as it was in
> dialog, but as it is using the rtpegngine dtmf event_route, its not in a
> specific dialog, and I think I need to construct it using something like
> uac_req_send.
>
> But I'm open to suggestions.
>
> Rob
>
>
>
>
>
> *Robert Boardman*
>
> ​​​​
>
> Solution Architect
> ------------------------------
>
> *From:* Henning Westerholt <[email protected]>
> *Sent:* Monday, October 13, 2025 15:11
> *To:* Kamailio (SER) - Users Mailing List <[email protected]>
> *Cc:* Robert Boardman <[email protected]>
> *Subject:* RE: out of dialog requests
>
>
>
> Hello,
>
>
>
> have you considered using the dialog module function for that?
>
>
>
> *https://kamailio.org/docs/modules/6.0.x/modules/dialog.html#dialog.f.dlg_refer
> <https://kamailio.org/docs/modules/6.0.x/modules/dialog.html#dialog.f.dlg_refer>*
>
>
>
> Cheers,
>
>
>
> Henning
>
>
>
> --
>
> Henning Westerholt – *https://skalatan.de/blog/
> <https://skalatan.de/blog/>*
>
> Kamailio services – *https://gilawa.com <https://gilawa.com/>*
>
>
>
> *From:* Robert Boardman via sr-users <[email protected]>
> *Sent:* Montag, 13. Oktober 2025 15:23
> *To:* Kamailio (SER) - Users Mailing List <[email protected]>
> *Cc:* Robert Boardman <[email protected]>
> *Subject:* [SR-Users] out of dialog requests
>
>
>
> Hi,
>
> I'm trying to send a refer from a rtpengine dtmf event, its mostly working
> but the uac_req_send always seems  to append new tags for the from /to even
> though I specify the origionals in the .
>
> The far end uses the tags and the callid to match the dialogs so these
> need to be in the refer.
>
> Example
>
>         # REFER to callee
>
>         xlog("L_INFO", "Sending REFER using from uri $var(to_uri)\n");
>
>         $uac_req(method)="REFER";
>
>         $uac_req(ruri)="sip:"+$var(to_uriU)+"@"+$var(SourceIP);
>
>         $uac_req(furi)=$var(from_uri)+";tag="+$var(fromTAG);
>
>         $uac_req(turi)=$var(to_uri)+";tag="+$var(toTAG);
>
>         $uac_req(callid)=$var(callid);
>
>         $uac_req(hdrs)="Refer-To:" +  $var(conf_uri2) + "\r\nReferred-By:
> " + $var(to_uri) + "\r\nContent-Length: 0\r\n\r\n";
>
>         uac_req_send();
>
>
>
> Is this possible?
>
> Thanks for your help
>
> Regards
>
> Rob
>
> *Robert Boardman*
>
> Solution Architect
>
>
>
> Tel:
>
> *03330147908 <03330147908>*
>
> Email:
>
> *[email protected] <[email protected]>*
>
>
>
>
>
>
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