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    <div class="moz-cite-prefix">On 12/15/20 3:19 PM, Antony Stone
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:202012152219.29238.Antony.Stone@asterisk.open.source.it"><br>
      <blockquote type="cite">
        <pre class="moz-quote-pre" wrap="">There is no functionality present to have Asterisk SUBSCRIBE to upstream
servers, receive updates, and locally use them.
</pre>
      </blockquote>
      <pre class="moz-quote-pre" wrap="">
Hm, thanks for the clarification, this confirms what I suspected.

Can anyone suggest an alternative application I could sensibly use alongside 
Asterisk in a production environment to achieve this (I'm specifically looking 
for a way to maintain presence information for a Busy Lamp Field, and to get 
notifications about Voicemail events).

I'm aware of both SIPp <a class="moz-txt-link-freetext" href="https://github.com/SIPp/sipp">https://github.com/SIPp/sipp</a> and SipSak 
<a class="moz-txt-link-freetext" href="https://github.com/nils-ohlmeier/sipsak">https://github.com/nils-ohlmeier/sipsak</a>, however these are (to me at least) 
testing scenario tools designed for "short term" use to place and receive 
calls, rather than maintaining long-term subscriptions to SIP accounts, 
waiting for notifications of events, so I'm somewhat wary about considering 
them for use in a production environment (by which I mean I'm looking for 
something which can subscribe to a few tens of SIP accounts (across several 
servers) and get the event notifications for those accounts, over a period of 
days and weeks, and pass them to my display application in almost any 
reasonable form).


Any ideas out there?

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    <br>
    It sounds to me like you just need a reasonable SIP softphone that
    can register with multiple SIP accounts (they all do) and show
    presence for the extension registered (I think most want you to pay
    for this feature versus the freebie client).<br>
    <br>
    Why run asterisk?<br>
    <br>
    Am I missing something?<br>
    <br>
    Cheers,<br>
    <br>
    <div class="moz-signature">-- <br>
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              valign="top"> <strong style="FONT-SIZE: 18pt;
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                        703.496.4990 x108</strong></td>
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                    <td style="FONT-SIZE: 9pt; FONT-FAMILY: Arial;
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                        Freedom Square<br>
                        13th Floor<br>
                        Reston, VA 20190</strong></td>
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