<div dir="ltr">There is no such thing as a semi attended transfer, doing that transfer in early media is NOT valid, its against the RFC... the fact it even works is a trick we do, technically we should just hang up.  Your best bet is to disable that transfer in the device.<div><br></div><div>/b</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Feb 1, 2021 at 9:14 AM Joshua Rupp <<a href="mailto:j.rupp@onecue.de">j.rupp@onecue.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">




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<span style="font-size:12pt">Hello,</span><br>
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<div style="margin:0px;font-size:12pt">We've a problem with the caller id in one transfer scenario:</div>
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<div style="margin:0px;font-size:12pt">In our Example Party A calls Party B, Party B answers the call and transfers it to Party C. We're talking about the Caller ID in the phone of Party C now.</div>
<div style="margin:0px;font-size:12pt">If B is doing an attended or unattended transfer, the caller id ist updating correctly as you would expect it.</div>
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<div style="margin:0px;font-size:12pt">But there's a third scenario, which is very common for users of older PBX systems: A so called "semi-attended transfer".</div>
<div style="margin:0px;font-size:12pt">This means, that Party B is initiating A attended transfer via BLF Key, but hangs up, before Party C has answered the call.</div>
<div style="margin:0px;font-size:12pt">In this case, the Caller ID should update to Party A, as soon as B hangs up his phone.</div>
<div style="margin:0px;font-size:12pt">But this is not happening: The Caller ID remains on Party B until C answers the call.  Only then the caller id is updated.</div>
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<div style="margin:0px;font-size:12pt">Why is the caller id not updated after B hangs up and before C answers the call?</div>
<div style="margin:0px;font-size:12pt">Is there any possibility to change this behaiviour?</div>
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<div style="margin:0px;background-color:rgb(255,255,255)">Thanks for your help</div>
<span style="margin:0px;background-color:rgb(255,255,255)">Joshua</span></div>
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