Dec 16 10:36:52 DEBUG[8880] chan_sip.c: **** Received ACK (6) - Command in SIP ACK
Dec 16 10:36:52 DEBUG[8880] chan_sip.c: Stopping retransmission on '4b71032dc813ed58' of Response 2: Match Found
Dec 16 10:36:53 DEBUG[19628] rtp.c: Ooh, format changed from unknown to alaw
Dec 16 10:36:53 DEBUG[19628] rtp.c: Ooh, format changed from unknown to alaw
Dec 16 10:36:53 DEBUG[19553] rtp.c: Got RTCP report of 32 bytes
Dec 16 10:36:53 DEBUG[19553] rtp.c: Got RTCP report of 72 bytes
Dec 16 10:36:53 DEBUG[19472] rtp.c: Got RTCP report of 52 bytes

(gdb) bt
#0  0x080644ad in ast_do_masquerade ()
#1  0x88005003 in ?? ()
#2  0x00000000 in ?? ()

(gdb) bt full
#0  0x080644ad in ast_do_masquerade ()
No symbol table info available.
#1  0x88005003 in ?? ()
No symbol table info available.
#2  0x00000000 in ?? ()
No symbol table info available.

(gdb) thread apply all bt
Thread 19 (process 8828):
#0  0x0081e50b in read () from /lib/i686/libpthread.so.0
#1  0x00000000 in ?? ()

Thread 18 (process 8833):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x008184c0 in __pthread_manager () from /lib/i686/libpthread.so.0
#2  0x001d702a in clone () from /lib/i686/libc.so.6

Thread 17 (process 8835):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x080ba8d6 in listener ()
#2  0x00000000 in ?? ()

Thread 16 (process 8836):
#0  0x0081b124 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
#1  0x0081a728 in __pthread_wait_for_restart_signal () from /lib/i686/libpthread.so.0
#2  0x00816fab in pthread_cond_wait@GLIBC_2.0 () from /lib/i686/libpthread.so.0
#3  0x080ceacf in do_devstate_changes ()

Thread 15 (process 8837):
#0  0x001cfbf1 in select () from /lib/i686/libc.so.6
#1  0x0053d8a4 in ?? () from /usr/lib/asterisk/modules/res_features.so
#2  0x00f88db4 in ?? ()
#3  0x00000000 in ?? ()

Thread 14 (process 8880):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x08055964 in ast_io_wait ()
#2  0x10624dd3 in ?? ()
#3  0x09cb2b10 in ?? ()
#4  0x003bf94c in ?? ()
#5  0x0081931e in pthread_mutex_unlock () from /lib/i686/libpthread.so.0
#6  0xb7ff9000 in ?? ()
#7  0x0096fa70 in _dl_map_object_deps () from /lib/ld-linux.so.2
Previous frame inner to this frame (corrupt stack?)

Thread 13 (process 8881):
#0  0x0019b926 in nanosleep () from /lib/i686/libc.so.6
#1  0x00000000 in ?? ()

Thread 12 (process 19631):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x080ba6f3 in netconsole ()
#2  0x00000002 in ?? ()
#3  0xffffffff in ?? ()
#4  0x00d6be94 in ?? ()
#5  0x0000227c in ?? ()
#6  0x08102dba in __PRETTY_FUNCTION__.0 ()
#7  0x00000000 in ?? ()

Thread 11 (process 18539):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x080663b7 in ast_waitfor_nandfds ()
#2  0x080682c5 in ast_channel_bridge ()
#3  0x00000002 in ?? ()
#4  0x00000000 in ?? ()

Thread 10 (process 19116):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x080663b7 in ast_waitfor_nandfds ()
#2  0x080682c5 in ast_channel_bridge ()
#3  0x00000002 in ?? ()
#4  0x00000000 in ?? ()

Thread 9 (process 19281):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x080663b7 in ast_waitfor_nandfds ()
#2  0x080682c5 in ast_channel_bridge ()
#3  0x00000002 in ?? ()
#4  0x00000000 in ?? ()

Thread 8 (process 19309):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x080663b7 in ast_waitfor_nandfds ()
#2  0x080682c5 in ast_channel_bridge ()
#3  0x00000002 in ?? ()
#4  0x00000000 in ?? ()

Thread 7 (process 19472):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x080663b7 in ast_waitfor_nandfds ()
#2  0x080682c5 in ast_channel_bridge ()
#3  0x00000002 in ?? ()
#4  0x00000000 in ?? ()

Thread 6 (process 19480):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x080663b7 in ast_waitfor_nandfds ()
#2  0x080682c5 in ast_channel_bridge ()
#3  0x00000002 in ?? ()
#4  0x00000000 in ?? ()

Thread 5 (process 19553):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x080663b7 in ast_waitfor_nandfds ()
#2  0x080682c5 in ast_channel_bridge ()
#3  0x00000002 in ?? ()
#4  0x00000000 in ?? ()

Thread 4 (process 19556):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x080663b7 in ast_waitfor_nandfds ()
#2  0x080682c5 in ast_channel_bridge ()
#3  0x00000002 in ?? ()
#4  0x00000000 in ?? ()

Thread 3 (process 19623):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x080663b7 in ast_waitfor_nandfds ()
#2  0x08066b37 in ast_waitfor_n ()
#3  0x00a963a4 in ?? ()
#4  0x00000002 in ?? ()
#5  0x00000000 in ?? ()

Thread 2 (process 19628):
#0  0x001cd93a in poll () from /lib/i686/libc.so.6
#1  0x080663b7 in ast_waitfor_nandfds ()
#2  0x080682c5 in ast_channel_bridge ()
#3  0x00000002 in ?? ()
#4  0x00000000 in ?? ()

Thread 1 (process 9049):
#0  0x080644ad in ast_do_masquerade ()
#1  0x88005003 in ?? ()
#2  0x00000000 in ?? ()