Dear All,
     I have received the XXX@sip.voxeo.net from my VXML application. I have written the following dial plan to call that number.
<extension name="VXML">
        <condition field="destination_number" expression="^(999)$">
                <action application="bridge" data="sofia/external/9996079973@sip.voxeo.net"/>
                <action application="hangup"/>
        </condition>
</extension>

I have registered the FreeSWITCH and called the 999 extension. But the call was just trying. Finally I have got the NO_ANSWER information in console.
2010-04-06 15:12:23.001741 [INFO] mod_dptools.c:2353 Originate Failed. Cause: NO_ANSWER

Is there configuration I need to do to call this number?? Please help me??