David is correct. Look at line #126 of your trace:
2010-06-27 18:08:38.787970 [DEBUG] switch_core_state_machine.c:53 sofia/external/6000@X.X.X.X Standard REPORTING, cause: CALL_REJECTED

You need to see the SIP traffic to get a better idea of why the carrier is rejecting your call. There are two primary ways of getting the trace: at the fs_cli using the command "sofia profile external siptrace on" or using tcpdump (or tshark, etc.) to get a pcap. More information available here:

http://wiki.freeswitch.org/wiki/Packet_Capture

-MC