<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On 7 August 2014 21:06, Kevin Larsen <span dir="ltr"><<a href="mailto:kevin.larsen@pioneerballoon.com" target="_blank">kevin.larsen@pioneerballoon.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class=""><tt><font>> back in the old analog telephony days there was
"digital" PBX-es and<br>
> digital "system" phonesets. This phonesets have had many
individual<br>
> illuminatable buttons connected with extensions. The PBX can show
on<br>
> the buttons if some extension is ringing (blinks) or busy (constant<br>
> light), and the user can transfer the call with one touch (pressing<br>
> one of this button).<br>
> <br>
> I search this functionality in Asterisk. What versions, and what<br>
> extension functions (or other settings), and what VoIP phones can
do<br>
> this?<br>
</font></tt>
<br></div><tt><font>Asterisk has had this functionality for a long time.
The terms you want to search for are BLF (Busy Lamp Field) and Subscribe.
I imagine that most sip phones have the necessary features to do BLF. I
know the Polycom phones I use certainly do. The Digium branded phones do
as well.</font></tt><br></blockquote></div><div><br></div><div>Also certain models of Snom and Yealink phones.</div>-- <br><div dir="ltr"><pre>Ishfaq Malik
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