Chris &amp; Brian, Thanks. <div><br></div><div>I finally manged the paging working for AASTRA phones. This is modified intercom dialplan with group_call</div><div><br></div><div><br></div><div><div><span class="Apple-tab-span" style="white-space:pre">        </span>&lt;extension name=&quot;extension-paging&quot;&gt;</div>
<div>      &lt;condition field=&quot;destination_number&quot; expression=&quot;^8000$&quot;&gt;</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>&lt;action application=&quot;set&quot; data=&quot;dialed_extension=$1&quot;/&gt;</div>
<div><span class="Apple-tab-span" style="white-space:pre">        </span>&lt;action application=&quot;export&quot; data=&quot;sip_auto_answer=true&quot;/&gt;</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>&lt;action application=&quot;bridge&quot; data=&quot;${group_call(pagegroup@${domain_name})}&quot;/&gt;</div>
<div>      &lt;/condition&gt;</div><div>    &lt;/extension&gt;</div><div><br></div>I will try the multicast with a  Cisco Router support GRE</div><div><br></div><div>Lloyd<br><div class="gmail_quote">On Tue, Mar 23, 2010 at 3:46 PM, Brian West <span dir="ltr">&lt;<a href="mailto:brian@freeswitch.org">brian@freeswitch.org</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Multicast goes over GRE tunnels :P<br>
<font color="#888888">/b<br>
</font><div class="im"><br>
On Mar 23, 2010, at 2:42 PM, Chris Chen wrote:<br>
<br>
&gt; Hi Lloyd, in the Aastra phone you may set up to receive the multicast paging by &quot;Group Paging RTP Settings &quot; under &quot;preferences&quot;, just put multicast IP address and port, then you can do multicast paging, however if I am understanding correctly it only working in LAN environment, I don&#39;t think you can forward multicast traffic through internet unless you sign up the multicast services.<br>

&gt;<br>
<br>
<br>
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