I think you can make another call to bind_meta_app and disable the *3 prior to the att_xfer. You could make *3 do something completely different (like trigger a log entry) and then you could see how many times your users tried to use *3 when they weren&#39;t supposed to. :)<div>
<br></div><div>-MC<br><br><div class="gmail_quote">On Wed, Feb 23, 2011 at 10:01 AM, Santiago Soares <span dir="ltr">&lt;<a href="mailto:santiagosoares@gmail.com">santiagosoares@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hello,<br><br>I&#39;m using att_xfer to make call transfer, like that:<br>A calls B<br>B calls C<br>B hangup and A is bridged do C<br><br>The thing is, the way I am trying to do it, C is able to transfer the call again.<br>


I don&#39;t want that C be able to transfer the call again.<br>The call should be transfered only once.<br>Is it possible?<br><br>This is my dialplan:<br><br>&lt;include&gt;<br><br>   &lt;extension name=&quot;test_extension&quot;&gt;<br>


      &lt;condition field=&quot;destination_number&quot; expression=&quot;^numberB$&quot;&gt;<br>         &lt;action application=&quot;set&quot; data=&quot;bind_meta_key=*&quot;/&gt;<br>         &lt;action application=&quot;bind_meta_app&quot; data=&quot;3 b s execute_extension::transferencia XML public&quot;/&gt;<br>


         &lt;action application=&quot;bridge&quot; data=&quot;sofia/gateway/test/loginB&quot;/&gt;<br>      &lt;/condition&gt;<br>   &lt;/extension&gt;<br><br>   &lt;extension name=&quot;transferencia&quot;&gt;<br>      &lt;condition field=&quot;destination_number&quot; expression=&quot;^transferencia$&quot;&gt;<br>


         &lt;action application=&quot;read&quot; data=&quot;3 3 base256/16000/sound.wav attxfer_callthis 30000 #&quot;/&gt;<br>         &lt;action application=&quot;execute_extension&quot; data=&quot;transferencia2&quot;/&gt;<br>


      &lt;/condition&gt;<br>   &lt;/extension&gt;<br><br>   &lt;extension name=&quot;transferencia2&quot;&gt;<br>      &lt;condition field=&quot;${attxfer_callthis}&quot; expression=&quot;^numberC$&quot;&gt;<br>         &lt;action application=&quot;att_xfer&quot; data=&quot;sofia/gateway/test/loginC&quot;/&gt;<br>


      &lt;/condition&gt;<br>      &lt;condition field=&quot;${attxfer_callthis}&quot; expression=&quot;^numberD$&quot;&gt;<br>
         &lt;action application=&quot;att_xfer&quot; data=&quot;sofia/gateway/test/loginD&quot;/&gt;<br>
      &lt;/condition&gt;<br>
   &lt;/extension&gt;<br><br>&lt;/include&gt;<br><br><br>Thank you,<br clear="all"><font color="#888888">Santiago Soares<br><br>
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<br></blockquote></div><br></div>