What mean this log message? MediaServerReporting::STUN

[jrme1]

Hi, since i upgrade to Version3.1.2434.0 i receive sometimes this message in my log:

[MS101003] Call(22) Sip:[email protected]: Possible firewall problem. Address mapping failed on STUN server 194.221.62.209:5060 for local address ":9048"

[MS101003] Call(9) Ext.10006: Possible firewall problem. Address mapping failed on STUN server 80.239.235.209:5060 for local address ":9022"

Sometime dialing internal and other dialing external. The call is maded normally, but what is that??

I using the 3CX stun server.

Thanks