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    <h2><a href="https://wiki.asterisk.org/wiki/display/AST/Function_CALLERPRES?focusedCommentId=10649837#comment-10649837">Function_CALLERPRES</a></h2>
        <h4>Page
        <b>comment added</b> by              <a href="https://wiki.asterisk.org/wiki/display/~mdavenport">Malcolm Davenport</a>
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       <p>Anyone else out there needing to make use of this functionality?  There's not a lot of commentary on the issue tracker or on the mailing lists that I see about it.</p>
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        <strong>In reply to a comment by <a href="/wiki/display/~alepaes"
                          class="url fn confluence-userlink" data-username="alepaes"
                   >Alexandre Arruda Paes</a>:</strong><br/>
        <p>Yep. <br/>
You can do a simple test (asterisk 1.6.2.15):</p>

<p>exten =&gt; 775,1,Set(CALLERPRES()=unavailable)<br/>
exten =&gt; 775,n,Dial(SIP/1000)          </p>

<p>exten =&gt; 776,1,Set(CALLERPRES()=unavailable)<br/>
exten =&gt; 776,n,Queue(test)</p>

<p>Queue 'test' have SIP/1000 as a static member.</p>

<p>This patch:
<a href="https://issues.asterisk.org/view.php?id=17909" class="external-link" rel="nofollow">https://issues.asterisk.org/view.php?id=17909</a> <br/>
is trying to resolve this, but in my test the call presentation isn't allways blocked.</p>
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