[OpenSIPS-Users] MS Teams REFER transfer on hold.

[Johan De Clercq]

Can you send a trace (pcap)?

Outlook voor iOS<https://aka.ms/o0ukef> downloaden
________________________________
Van: Users <users-bounces at lists.opensips.org> namens Yuriy Nasida <ynasida at gmail.com>
Verzonden: Monday, May 11, 2020 8:50:44 AM
Aan: OpenSIPS users mailling list <users at lists.opensips.org>
Onderwerp: Re: [OpenSIPS-Users] MS Teams REFER transfer on hold.

Guys,

Hold/Unhold, blind transfers is fine without REFER support
But... Please note that attended  (consult) transfer will not work.
I did many tests and MS does 3th call to connect  Transferee and Transfer Target. Not sure why. I tried same things from regular softphone - and it works great without 3th call.



On Sat, 9 May 2020 at 00:02, Slava Bendersky via Users <users at lists.opensips.org<mailto:users at lists.opensips.org>> wrote:
Hello Johan,
Thank you for reply and help.
Based on MS Teams   Allow header will disable REFER and MS Teams will send invite in dialog.
The following code  snippet on 200 OK reply  is resolve the issue.

                        $var(refer-allow) = "INVITE, ACK, CANCEL, BYE, INFO, NOTIFY, PRACK, UPDATE, OPTIONS";
                        remove_hf("Allow");
                        insert_hf("Allow: $var(refer-allow)\r\n");



volga629
________________________________
From: "johan" <johan at democon.be<mailto:johan at democon.be>>
To: "OpenSIPS users mailling list" <users at lists.opensips.org<mailto:users at lists.opensips.org>>
Sent: Friday, May 8, 2020 9:58:56 AM
Subject: Re: [OpenSIPS-Users] MS Teams REFER transfer on hold.


try with replying that you don't support refer.

On 8/05/2020 11:19, Slava Bendersky via Users wrote:
Hello Everyone,
I am trying put tougher transfer feature with in MS Teams.
And based on my research and testing right now is not possible with opensips.
MS Teams are sending on hold  in case of transfer and onhold as a=inactive.
Major problem they require encode/decode params in REFER-TO REFER-BY.

MS Teams expect observe REFER with 202 and decode params  with future action.

Here official requirements doc.

https://docs.microsoft.com/en-us/microsoftteams/direct-routing-protocols-sip#call-transfer

Any suggestion welcome.

volga629.





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