FusionPBX External Sip Profile Conf INVALID

I was having the exact same problem as this guy.I followed the answer but that gives me INVALID Profile

I have only tried to configure external.xml file to my External IP.But everytime i reloadxml it tells me my sip profile conf is invalid

What i tried:

• Made sure that the ports are not blocked
• Can reach the port from telnet command telnet MY_IP MY_PORT

Please throw some light anyone.Thanks

Solved it.

I was changing the wrong xml tag.Needed to change

<param name="ext-rtp-ip" value="MY_EX_IP"/>
<param name="ext-sip-ip" value="MY_EX_IP"/>