<div>I have already set it in my FreeSwitch\conf\sip_profiles\external.xml:</div>
<div> </div>
<div>&lt;gateways&gt;<br>  &lt;gateway name=&quot;FreeSwitch&quot;&gt;<br>           &lt;param name=&quot;username&quot; value=&quot;1008&quot;/&gt;<br>           &lt;param name=&quot;realm&quot; value=&quot;218.210.xxx.xxx&quot;/&gt;<br>
           &lt;param name=&quot;password&quot; value=&quot;1234&quot;/&gt;<br>           &lt;param name=&quot;extension&quot; value=&quot;1008&quot;/&gt;<br>           &lt;param name=&quot;proxy&quot; value=&quot;218.210.xxx.xxx&quot;/&gt;<br>
           &lt;param name=&quot;expire-seconds&quot; value=&quot;3600&quot;/&gt;<br>           &lt;param name=&quot;retry-seconds&quot; value=&quot;10&quot;/&gt;<br>   &lt;/gateway&gt;<br> &lt;/gateways&gt;<br></div>
<div>But my FS_A always return a 403 to FS_B, Where is the problem??</div>