[Freeswitch-users] how to fix "STUN Failed! stun.freeswitch.org:3478 [Bind Error!]" ?

Hi there, I am doing a stress test of sending 30 calls to another freeSWITCH box that is in different network/location. And I keep getting 1 call with the following error: 2011-05-16 02:29:14.894260 [ERR] sofia_glue.c:912 STUN Failed! stun.freeswitch.o rg:3478 [Bind Error!] 2011-05-16 02:29:14.894260 [NOTICE] mod_sofia.c:670 Hangup sofia/external/<a phone number>@<some <2@<some> IP address> [CS_EXECUTE] [DESTINATION_OUT_OF_ORDER] Could someone please let me know what exactly is wrong and how to fix this? Thanks, Frankie