<html><body><div style="font-family: lucida console,sans-serif; font-size: 12pt; color: #000000"><div>Hello Johan,</div><div>Thank you for reply and help.</div><div>Based on MS Teams Allow header will disable REFER and MS Teams will send invite in dialog. </div><div>The following code snippet on 200 OK reply is resolve the issue.</div><div><br data-mce-bogus="1"></div><div><div> $var(refer-allow) = "INVITE, ACK, CANCEL, BYE, INFO, NOTIFY, PRACK, UPDATE, OPTIONS";</div><div> remove_hf("Allow");</div><div> insert_hf("Allow: $var(refer-allow)\r\n");</div></div><div><br></div><div><br data-mce-bogus="1"></div><div> </div><div>volga629</div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"johan" <johan@democon.be><br><b>To: </b>"OpenSIPS users mailling list" <users@lists.opensips.org><br><b>Sent: </b>Friday, May 8, 2020 9:58:56 AM<br><b>Subject: </b>Re: [OpenSIPS-Users] MS Teams REFER transfer on hold.<br></div><div><br></div><div data-marker="__QUOTED_TEXT__"><p>try with replying that you don't support refer. <br>
</p>
<div>On 8/05/2020 11:19, Slava Bendersky via
Users wrote:<br>
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<div>Hello Everyone,</div>
<div>I am trying put tougher transfer feature with in MS
Teams.</div>
<div>And based on my research and testing right now is not
possible with opensips.</div>
<div>MS Teams are sending on hold in case of transfer and
onhold as a=inactive.</div>
<div>Major problem they require encode/decode params in
REFER-TO REFER-BY.</div>
<div><br>
</div>
<div>MS Teams expect observe REFER with 202 and decode
params with future action.</div>
<br>
<div>Here official requirements doc.</div>
<div> </div>
</div>
<div><a href="https://docs.microsoft.com/en-us/microsoftteams/direct-routing-protocols-sip#call-transfer" target="_blank" rel="nofollow noopener noreferrer">https://docs.microsoft.com/en-us/microsoftteams/direct-routing-protocols-sip#call-transfer</a></div>
<div><br>
</div>
<div>Any suggestion welcome.</div>
<div><br>
</div>
<div>volga629.</div>
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