(gdb) bt
#0  local_hangup (ast=Variable "ast" is not available.
) at chan_local.c:444
#1  0x0000000000421768 in ast_hangup (chan=0x12e5380) at channel.c:1325
#2  0x0000000000446212 in __ast_pbx_run (c=0x12e5380) at pbx.c:2467
#3  0x00000000004477a9 in pbx_thread (data=Variable "data" is not available.
) at pbx.c:2517
#4  0x000000379ef0610a in start_thread () from /lib64/tls/libpthread.so.0
#5  0x000000379e4c6003 in clone () from /lib64/tls/libc.so.6
#6  0x0000000000000000 in ?? ()