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<p>I have a setup with Yealink phones & Asterisk Server (all
latest patches).</p>
<p>I am using BLF to display the states of other phones. While this
works MOST of the time (busy, being called) it does NOT work when
a phone is NOT regisstered at all, the yealink phones display a
green dot EVEN if a phone is turned off (try explain this to
users, they are shaking their heads!!!)</p>
<p>I can see on the Asterisk server it shows correctly in the logs
when a phone is disconnected.<br>
It also advises the otehr phones correctly when a phone is busy,
even if a person starts dialing - the red dot shows up
milliseconds later on ALL of the other phones.</p>
<p>I have asked a question about this before <a
href="https://community.asterisk.org/t/yealink-t46s-t46g-blf-show-green-dot-icon-even-if-not-registered/85701">Green
Dot</a></p>
<p>So I went and asked Yealink about this. The reply was something
like this: “Currently the phone can only support the BLF LED
display with early/confirmed/terminated/proceeding NOTIFY states.”</p>
<p>My question now is can I implement this properly on an Asterisk
server?<br>
I.e. when a phone gets disconnected that all other phones are
advised “hey I am not available” and actually show a RED dot.<br>
</p>
<p>thanks</p>
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